Finding the Third Proportional to 51,810 and 80,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,810 : 80,243.50 = 80,243.50 : x
2. Step 2: Convert to fraction form
   51,810/80,243.50 = 80,243.50/x
3. Step 3: Cross multiply
   51,810x = 80,243.50 × 80,243.50
4. Step 4: Simplify right side
   51,810x = 6,439,019,292.25
5. Step 5: Solve for x
   x = 6,439,019,292.25/51,810
6. Step 6: Final answer
   x = 124,281.40