Finding the Third Proportional to 142,336 and 329,472

Step by Step Solution

1. Step 1: Write the proportion equation
   142,336 : 329,472 = 329,472 : x
2. Step 2: Convert to fraction form
   142,336/329,472 = 329,472/x
3. Step 3: Cross multiply
   142,336x = 329,472 × 329,472
4. Step 4: Simplify right side
   142,336x = 108,551,798,784
5. Step 5: Solve for x
   x = 108,551,798,784/142,336
6. Step 6: Final answer
   x = 762,644.72