Finding the Third Proportional to 99,760.50 and 221,665.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,760.50 : 221,665.50 = 221,665.50 : x
2. Step 2: Convert to fraction form
   99,760.50/221,665.50 = 221,665.50/x
3. Step 3: Cross multiply
   99,760.50x = 221,665.50 × 221,665.50
4. Step 4: Simplify right side
   99,760.50x = 49,135,593,890.25
5. Step 5: Solve for x
   x = 49,135,593,890.25/99,760.50
6. Step 6: Final answer
   x = 492,535.56