Finding the Third Proportional to 639,042 and 1,002,447

Step by Step Solution

1. Step 1: Write the proportion equation
   639,042 : 1,002,447 = 1,002,447 : x
2. Step 2: Convert to fraction form
   639,042/1,002,447 = 1,002,447/x
3. Step 3: Cross multiply
   639,042x = 1,002,447 × 1,002,447
4. Step 4: Simplify right side
   639,042x = 1,004,899,987,809
5. Step 5: Solve for x
   x = 1,004,899,987,809/639,042
6. Step 6: Final answer
   x = 1,572,510.08