Finding the Third Proportional to 99,447.75 and 216,209.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99,447.75 : 216,209.25 = 216,209.25 : x
2. Step 2: Convert to fraction form
   99,447.75/216,209.25 = 216,209.25/x
3. Step 3: Cross multiply
   99,447.75x = 216,209.25 × 216,209.25
4. Step 4: Simplify right side
   99,447.75x = 46,746,439,785.56
5. Step 5: Solve for x
   x = 46,746,439,785.56/99,447.75
6. Step 6: Final answer
   x = 470,060.31