What is the value of the digit 3 in the number 2,135,789?

##3 xx 10,000 = 30,000##

In any number each place value represents a certain power of 10.

In ##2,1color(red)(3)5,789##, the place value for the ##color(red)(3)## is ten thousands

The value of the 3 is therefore ##color(red)(3 xx 10,000 = 30,000)##