Finding the Third Proportional to 54,441.75 and 81,662.63

Step by Step Solution

1. Step 1: Write the proportion equation
   54,441.75 : 81,662.63 = 81,662.63 : x
2. Step 2: Convert to fraction form
   54,441.75/81,662.63 = 81,662.63/x
3. Step 3: Cross multiply
   54,441.75x = 81,662.63 × 81,662.63
4. Step 4: Simplify right side
   54,441.75x = 6,668,784,321.89
5. Step 5: Solve for x
   x = 6,668,784,321.89/54,441.75
6. Step 6: Final answer
   x = 122,493.94