Finding the Third Proportional to 54,572.48 and 81,522.70

Step by Step Solution

1. Step 1: Write the proportion equation
   54,572.48 : 81,522.70 = 81,522.70 : x
2. Step 2: Convert to fraction form
   54,572.48/81,522.70 = 81,522.70/x
3. Step 3: Cross multiply
   54,572.48x = 81,522.70 × 81,522.70
4. Step 4: Simplify right side
   54,572.48x = 6,645,951,124.81
5. Step 5: Solve for x
   x = 6,645,951,124.81/54,572.48
6. Step 6: Final answer
   x = 121,782.09