Finding the Third Proportional to 51,043.50 and 76,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,043.50 : 76,621.50 = 76,621.50 : x
2. Step 2: Convert to fraction form
   51,043.50/76,621.50 = 76,621.50/x
3. Step 3: Cross multiply
   51,043.50x = 76,621.50 × 76,621.50
4. Step 4: Simplify right side
   51,043.50x = 5,870,854,262.25
5. Step 5: Solve for x
   x = 5,870,854,262.25/51,043.50
6. Step 6: Final answer
   x = 115,016.69