Finding the Third Proportional to 51,231.75 and 76,320.75

Step by Step Solution

1. Step 1: Write the proportion equation
   51,231.75 : 76,320.75 = 76,320.75 : x
2. Step 2: Convert to fraction form
   51,231.75/76,320.75 = 76,320.75/x
3. Step 3: Cross multiply
   51,231.75x = 76,320.75 × 76,320.75
4. Step 4: Simplify right side
   51,231.75x = 5,824,856,880.56
5. Step 5: Solve for x
   x = 5,824,856,880.56/51,231.75
6. Step 6: Final answer
   x = 113,696.23