Finding the Third Proportional to 54,664.88 and 81,713.81

Step by Step Solution

1. Step 1: Write the proportion equation
   54,664.88 : 81,713.81 = 81,713.81 : x
2. Step 2: Convert to fraction form
   54,664.88/81,713.81 = 81,713.81/x
3. Step 3: Cross multiply
   54,664.88x = 81,713.81 × 81,713.81
4. Step 4: Simplify right side
   54,664.88x = 6,677,147,153.29
5. Step 5: Solve for x
   x = 6,677,147,153.29/54,664.88
6. Step 6: Final answer
   x = 122,146.94