Finding the Third Proportional to 62,742 and 89,436.75

Step by Step Solution

1. Step 1: Write the proportion equation
   62,742 : 89,436.75 = 89,436.75 : x
2. Step 2: Convert to fraction form
   62,742/89,436.75 = 89,436.75/x
3. Step 3: Cross multiply
   62,742x = 89,436.75 × 89,436.75
4. Step 4: Simplify right side
   62,742x = 7,998,932,250.56
5. Step 5: Solve for x
   x = 7,998,932,250.56/62,742
6. Step 6: Final answer
   x = 127,489.28