Finding the Third Proportional to 72,217.50 and 108,549

Step by Step Solution

1. Step 1: Write the proportion equation
   72,217.50 : 108,549 = 108,549 : x
2. Step 2: Convert to fraction form
   72,217.50/108,549 = 108,549/x
3. Step 3: Cross multiply
   72,217.50x = 108,549 × 108,549
4. Step 4: Simplify right side
   72,217.50x = 11,782,885,401
5. Step 5: Solve for x
   x = 11,782,885,401/72,217.50
6. Step 6: Final answer
   x = 163,158.31