Finding the Third Proportional to 99,096 and 216,240

Step by Step Solution

1. Step 1: Write the proportion equation
   99,096 : 216,240 = 216,240 : x
2. Step 2: Convert to fraction form
   99,096/216,240 = 216,240/x
3. Step 3: Cross multiply
   99,096x = 216,240 × 216,240
4. Step 4: Simplify right side
   99,096x = 46,759,737,600
5. Step 5: Solve for x
   x = 46,759,737,600/99,096
6. Step 6: Final answer
   x = 471,863.02