Finding the Third Proportional to 99,532.50 and 216,560

Step by Step Solution

1. Step 1: Write the proportion equation
   99,532.50 : 216,560 = 216,560 : x
2. Step 2: Convert to fraction form
   99,532.50/216,560 = 216,560/x
3. Step 3: Cross multiply
   99,532.50x = 216,560 × 216,560
4. Step 4: Simplify right side
   99,532.50x = 46,898,233,600
5. Step 5: Solve for x
   x = 46,898,233,600/99,532.50
6. Step 6: Final answer
   x = 471,185.13