Finding the Third Proportional to 54,149.50 and 81,224.25

Step by Step Solution

1. Step 1: Write the proportion equation
   54,149.50 : 81,224.25 = 81,224.25 : x
2. Step 2: Convert to fraction form
   54,149.50/81,224.25 = 81,224.25/x
3. Step 3: Cross multiply
   54,149.50x = 81,224.25 × 81,224.25
4. Step 4: Simplify right side
   54,149.50x = 6,597,378,788.06
5. Step 5: Solve for x
   x = 6,597,378,788.06/54,149.50
6. Step 6: Final answer
   x = 121,836.38