Finding the Third Proportional to 60,880 and 81,436

Step by Step Solution

1. Step 1: Write the proportion equation
   60,880 : 81,436 = 81,436 : x
2. Step 2: Convert to fraction form
   60,880/81,436 = 81,436/x
3. Step 3: Cross multiply
   60,880x = 81,436 × 81,436
4. Step 4: Simplify right side
   60,880x = 6,631,822,096
5. Step 5: Solve for x
   x = 6,631,822,096/60,880
6. Step 6: Final answer
   x = 108,932.69