Finding the Third Proportional to 50,200.50 and 80,728

Step by Step Solution

1. Step 1: Write the proportion equation
   50,200.50 : 80,728 = 80,728 : x
2. Step 2: Convert to fraction form
   50,200.50/80,728 = 80,728/x
3. Step 3: Cross multiply
   50,200.50x = 80,728 × 80,728
4. Step 4: Simplify right side
   50,200.50x = 6,517,009,984
5. Step 5: Solve for x
   x = 6,517,009,984/50,200.50
6. Step 6: Final answer
   x = 129,819.62