The pattern in the sequence is that each number is halved:
- 10,000,000 divided by 2 is 5,000,000.
- 5,000,000 divided by 2 is 2,500,000.
Continuing this pattern, we divide 2,500,000 by 2:
2,500,000 รท 2 = 1,250,000.
So, the next number in the pattern is 1,250,000.