Answer:
He is incorrect.
Step-by-step explanation:
The hundred-thousands digit is the 4.
To round to the nearest hundred-thousand, all digits to the right of 4 become zero.
The answer is either
3,400,000
or
3,500,000
The first digit to the right of the 4 is a 7, so the 4 rounds up to 5, and the answer is 3,500,000.
