Finding the Third Proportional to 72,900 and 156,872

Step by Step Solution

1. Step 1: Write the proportion equation
   72,900 : 156,872 = 156,872 : x
2. Step 2: Convert to fraction form
   72,900/156,872 = 156,872/x
3. Step 3: Cross multiply
   72,900x = 156,872 × 156,872
4. Step 4: Simplify right side
   72,900x = 24,608,824,384
5. Step 5: Solve for x
   x = 24,608,824,384/72,900
6. Step 6: Final answer
   x = 337,569.61