Finding the Third Proportional to 99,294.50 and 216,060.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,294.50 : 216,060.50 = 216,060.50 : x
2. Step 2: Convert to fraction form
   99,294.50/216,060.50 = 216,060.50/x
3. Step 3: Cross multiply
   99,294.50x = 216,060.50 × 216,060.50
4. Step 4: Simplify right side
   99,294.50x = 46,682,139,660.25
5. Step 5: Solve for x
   x = 46,682,139,660.25/99,294.50
6. Step 6: Final answer
   x = 470,138.22