Finding the Third Proportional to 99,272.25 and 216,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,272.25 : 216,040.50 = 216,040.50 : x
2. Step 2: Convert to fraction form
   99,272.25/216,040.50 = 216,040.50/x
3. Step 3: Cross multiply
   99,272.25x = 216,040.50 × 216,040.50
4. Step 4: Simplify right side
   99,272.25x = 46,673,497,640.25
5. Step 5: Solve for x
   x = 46,673,497,640.25/99,272.25
6. Step 6: Final answer
   x = 470,156.54