Finding the Third Proportional to 639,496 and 960,892

Step by Step Solution

1. Step 1: Write the proportion equation
   639,496 : 960,892 = 960,892 : x
2. Step 2: Convert to fraction form
   639,496/960,892 = 960,892/x
3. Step 3: Cross multiply
   639,496x = 960,892 × 960,892
4. Step 4: Simplify right side
   639,496x = 923,313,435,664
5. Step 5: Solve for x
   x = 923,313,435,664/639,496
6. Step 6: Final answer
   x = 1,443,814.25