Finding the Third Proportional to 55,719.50 and 81,445.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,719.50 : 81,445.50 = 81,445.50 : x
2. Step 2: Convert to fraction form
   55,719.50/81,445.50 = 81,445.50/x
3. Step 3: Cross multiply
   55,719.50x = 81,445.50 × 81,445.50
4. Step 4: Simplify right side
   55,719.50x = 6,633,369,470.25
5. Step 5: Solve for x
   x = 6,633,369,470.25/55,719.50
6. Step 6: Final answer
   x = 119,049.34