Finding the Third Proportional to 99,279 and 216,049.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,279 : 216,049.50 = 216,049.50 : x
2. Step 2: Convert to fraction form
   99,279/216,049.50 = 216,049.50/x
3. Step 3: Cross multiply
   99,279x = 216,049.50 × 216,049.50
4. Step 4: Simplify right side
   99,279x = 46,677,386,450.25
5. Step 5: Solve for x
   x = 46,677,386,450.25/99,279
6. Step 6: Final answer
   x = 470,163.75