Finding the Third Proportional to 48,531 and 72,724.50

Step by Step Solution

1. Step 1: Write the proportion equation
   48,531 : 72,724.50 = 72,724.50 : x
2. Step 2: Convert to fraction form
   48,531/72,724.50 = 72,724.50/x
3. Step 3: Cross multiply
   48,531x = 72,724.50 × 72,724.50
4. Step 4: Simplify right side
   48,531x = 5,288,852,900.25
5. Step 5: Solve for x
   x = 5,288,852,900.25/48,531
6. Step 6: Final answer
   x = 108,978.86