Finding the Third Proportional to 60,839.50 and 81,381.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,839.50 : 81,381.50 = 81,381.50 : x
2. Step 2: Convert to fraction form
   60,839.50/81,381.50 = 81,381.50/x
3. Step 3: Cross multiply
   60,839.50x = 81,381.50 × 81,381.50
4. Step 4: Simplify right side
   60,839.50x = 6,622,948,542.25
5. Step 5: Solve for x
   x = 6,622,948,542.25/60,839.50
6. Step 6: Final answer
   x = 108,859.35