Finding the Third Proportional to 53,152 and 72,217.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,152 : 72,217.50 = 72,217.50 : x
2. Step 2: Convert to fraction form
   53,152/72,217.50 = 72,217.50/x
3. Step 3: Cross multiply
   53,152x = 72,217.50 × 72,217.50
4. Step 4: Simplify right side
   53,152x = 5,215,367,306.25
5. Step 5: Solve for x
   x = 5,215,367,306.25/53,152
6. Step 6: Final answer
   x = 98,121.75