Showing the lessor of two text fields. In a 3rd text field.

Hello,

So I have two text boxes with each having a number in them. I would like which ever one is less to show in the 3rd text field.

For an example text1 shows 100 and text2 shows 200. So after I press my button text3 will show as 100.

Not sure how the code would look exactly, any help will be greatly appreciated!

Thank you in advance!