Looking on the internet deeply has found these results:

prove to be is the most popular phrase on the web.

prove being 160,300 results on the web	prove to be 133,600,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
I have nothing to prove to weaker beings. There is no reference to ballistic You must prove yourself worthy of being my apprentice. What did you want to prove, being so stuborn like that! They'll prove your father's being paid to take the fall. missile defence, which indirectly but clearly proves it is being accepted through NATO and the EU itself. I guess it just proves that being dismissed by people who think they know better is not an obstacle to winning a Nobel prize. I suppose you feel like you need to prove yourself being Starfleet's first on board ship's counselor...	This could prove to be one of the most important and productive reforms of this organisation. productive. Any thoughts of unilaterally imposing a solution on Kosovo may prove to be counter This haste could prove to be a big mistake. Containing the European Union's energy demand could prove to be an important factor in solving the problem. Nabucco may prove to be an excellent step towards ensuring energy security. These targets could prove to be effective tools in efforts to reach the overall target on emissions reduction. This debate, the indicated texts and the document adopted today may therefore prove to be very useful.

prove being

160,300 results on the web

prove to be

133,600,000 results on the web

More popular!

I have nothing to prove to weaker beings.
There is no reference to ballistic
You must prove yourself worthy of being my apprentice.
What did you want to prove, being so stuborn like that!
They'll prove your father's being paid to take the fall.
missile defence, which indirectly but clearly proves it is being accepted through NATO and the EU itself.
I guess it just proves that being dismissed by people who think they know better is not an obstacle to winning a Nobel prize.
I suppose you feel like you need to prove yourself being Starfleet's first on board ship's counselor...

This could prove to be one of the most important and productive reforms of this organisation.
productive.
Any thoughts of unilaterally imposing a solution on Kosovo may prove to be counter
This haste could prove to be a big mistake.
Containing the European Union's energy demand could prove to be an important factor in solving the problem.
Nabucco may prove to be an excellent step towards ensuring energy security.
These targets could prove to be effective tools in efforts to reach the overall target on emissions reduction.
This debate, the indicated texts and the document adopted today may therefore prove to be very useful.