Finding the Third Proportional to 642,582 and 1,411,256

Step by Step Solution

1. Step 1: Write the proportion equation
   642,582 : 1,411,256 = 1,411,256 : x
2. Step 2: Convert to fraction form
   642,582/1,411,256 = 1,411,256/x
3. Step 3: Cross multiply
   642,582x = 1,411,256 × 1,411,256
4. Step 4: Simplify right side
   642,582x = 1,991,643,497,536
5. Step 5: Solve for x
   x = 1,991,643,497,536/642,582
6. Step 6: Final answer
   x = 3,099,438.67