displaying numbers with thousand separator and .00

On my previous project, I needed to select a number stored in the database, such as 36749384 or 934834.23 which were monetary values, and display them as 36,749,384.00 and 934,834.23. Basically, in monetary terms.
I was thinking of using string manipulation but that would only work in my .net development, so if you need these kinds [...]