Looking on the internet deeply has found these results:

via the method is the most popular phrase on the web.

by the method 1176,000,000 results on the web	via the method 1211,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
The calibration curve is calculated by the method of least squares. the fermentation in closed tank which he created for the vinification of Muscat Blanc. The success has been given by the method invented by Federico Martinotti They appear in any kind of learning offered by the method. After quitting smoking in 2005, he was so impressed by the method he used that he created the two This need appears to be met by the method of open cooperation. The nature and extent of «revaluation adjustments» are determined by the method of valuation adopted.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

by the method

1176,000,000 results on the web

via the method

1211,000,000 results on the web

More popular!

The calibration curve is calculated by the method of least squares.
the fermentation in closed tank
which he created for the vinification of Muscat Blanc.
The success has been given by the method invented by Federico Martinotti
They appear in any kind of learning offered by the method.
After quitting smoking in 2005, he was so impressed by the method he used that he created the two
This need appears to be met by the method of open cooperation.
The nature and extent of «revaluation adjustments» are determined by the method of valuation adopted.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.