2000017607

For which real number $x$ is the determinant of the matrix equal to $124$? $$\left(\begin{array}{ccc}{2}^2& \sqrt{625}& \sin (-\frac{\pi }{2})\\ {\log }_{3}x& 0& \cos 0\\ 2& 7^{-1}& -1\end{array}\right)$$