To determine the largest place value of the number 12,345,000, we can look at the digits in the number. The number is represented as follows:
- 1 in the ten million place
- 2 in the million place
- 3 in the hundred thousand place
- 4 in the ten thousand place
- 5 in the thousand place
- 0 in the hundred place
- 0 in the ten place
- 0 in the one place
The largest place value present in this quantity is in the ten million place.
So, the answer is ten million.