The number 12,345,000 can be broken down into its place values 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 highest place value present in the number 12,345,000 is the ten million place, represented by the digit '1'. Therefore, the largest place value of the numeric part of this quantity is ten million.