Finding the Third Proportional to 99,239.50 and 218,162

Step by Step Solution

1. Step 1: Write the proportion equation
   99,239.50 : 218,162 = 218,162 : x
2. Step 2: Convert to fraction form
   99,239.50/218,162 = 218,162/x
3. Step 3: Cross multiply
   99,239.50x = 218,162 × 218,162
4. Step 4: Simplify right side
   99,239.50x = 47,594,658,244
5. Step 5: Solve for x
   x = 47,594,658,244/99,239.50
6. Step 6: Final answer
   x = 479,593.89