Finding the Third Proportional to 172,892 and 359,554

Step by Step Solution

1. Step 1: Write the proportion equation
   172,892 : 359,554 = 359,554 : x
2. Step 2: Convert to fraction form
   172,892/359,554 = 359,554/x
3. Step 3: Cross multiply
   172,892x = 359,554 × 359,554
4. Step 4: Simplify right side
   172,892x = 129,279,078,916
5. Step 5: Solve for x
   x = 129,279,078,916/172,892
6. Step 6: Final answer
   x = 747,744.71