In order to find a number that can be rounded to 6,300,000, we need to ensure that the number to the right of the 3 (in the ten thousands place) is a number less than or equal to 4. Any number to the right of the ten thousands place would not matter what it is as long as the rounding would keep the ten thousands place at 4 or less. A number that would work is 6,342,517.
