Finding the Third Proportional to 55,660.50 and 77,861.25

Step by Step Solution

1. Step 1: Write the proportion equation
   55,660.50 : 77,861.25 = 77,861.25 : x
2. Step 2: Convert to fraction form
   55,660.50/77,861.25 = 77,861.25/x
3. Step 3: Cross multiply
   55,660.50x = 77,861.25 × 77,861.25
4. Step 4: Simplify right side
   55,660.50x = 6,062,374,251.56
5. Step 5: Solve for x
   x = 6,062,374,251.56/55,660.50
6. Step 6: Final answer
   x = 108,916.99