Finding the Third Proportional to 51,292.50 and 80,178.75

Step by Step Solution

1. Step 1: Write the proportion equation
   51,292.50 : 80,178.75 = 80,178.75 : x
2. Step 2: Convert to fraction form
   51,292.50/80,178.75 = 80,178.75/x
3. Step 3: Cross multiply
   51,292.50x = 80,178.75 × 80,178.75
4. Step 4: Simplify right side
   51,292.50x = 6,428,631,951.56
5. Step 5: Solve for x
   x = 6,428,631,951.56/51,292.50
6. Step 6: Final answer
   x = 125,332.79