Finding the Third Proportional to 99,268.50 and 216,384

Step by Step Solution

1. Step 1: Write the proportion equation
   99,268.50 : 216,384 = 216,384 : x
2. Step 2: Convert to fraction form
   99,268.50/216,384 = 216,384/x
3. Step 3: Cross multiply
   99,268.50x = 216,384 × 216,384
4. Step 4: Simplify right side
   99,268.50x = 46,822,035,456
5. Step 5: Solve for x
   x = 46,822,035,456/99,268.50
6. Step 6: Final answer
   x = 471,670.63