Finding the Third Proportional to 55,449.75 and 81,199.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,449.75 : 81,199.50 = 81,199.50 : x
2. Step 2: Convert to fraction form
   55,449.75/81,199.50 = 81,199.50/x
3. Step 3: Cross multiply
   55,449.75x = 81,199.50 × 81,199.50
4. Step 4: Simplify right side
   55,449.75x = 6,593,358,800.25
5. Step 5: Solve for x
   x = 6,593,358,800.25/55,449.75
6. Step 6: Final answer
   x = 118,906.92