To determine the largest place value of the numerical part of the quantity 12,345,000, we can break down the number into its place values:
- 1 is in the ten million place.
- 2 is in the million place.
- 3 is in the hundred thousand place.
- 4 is in the ten thousand place.
- 5 is in the thousand place.
- 0 is in the hundred place.
- 0 is in the ten place.
- 0 is in the unit place.
The largest place value in this number is the ten million place, which is represented by the digit 1. Therefore, the largest place value of the numerical part of the quantity 12,345,000 is 10 million.