Finding the Third Proportional to 51,349.50 and 76,821.75

Step by Step Solution

1. Step 1: Write the proportion equation
   51,349.50 : 76,821.75 = 76,821.75 : x
2. Step 2: Convert to fraction form
   51,349.50/76,821.75 = 76,821.75/x
3. Step 3: Cross multiply
   51,349.50x = 76,821.75 × 76,821.75
4. Step 4: Simplify right side
   51,349.50x = 5,901,581,273.06
5. Step 5: Solve for x
   x = 5,901,581,273.06/51,349.50
6. Step 6: Final answer
   x = 114,929.67