Finding the Third Proportional to 99,434.25 and 216,158.63

Step by Step Solution

1. Step 1: Write the proportion equation
   99,434.25 : 216,158.63 = 216,158.63 : x
2. Step 2: Convert to fraction form
   99,434.25/216,158.63 = 216,158.63/x
3. Step 3: Cross multiply
   99,434.25x = 216,158.63 × 216,158.63
4. Step 4: Simplify right side
   99,434.25x = 46,724,551,161.89
5. Step 5: Solve for x
   x = 46,724,551,161.89/99,434.25
6. Step 6: Final answer
   x = 469,903.99