Finding the Third Proportional to 642,651 and 1,411,390

Step by Step Solution

1. Step 1: Write the proportion equation
   642,651 : 1,411,390 = 1,411,390 : x
2. Step 2: Convert to fraction form
   642,651/1,411,390 = 1,411,390/x
3. Step 3: Cross multiply
   642,651x = 1,411,390 × 1,411,390
4. Step 4: Simplify right side
   642,651x = 1,992,021,732,100
5. Step 5: Solve for x
   x = 1,992,021,732,100/642,651
6. Step 6: Final answer
   x = 3,099,694.44