Finding the Third Proportional to 221,152.50 and 333,561

Step by Step Solution

1. Step 1: Write the proportion equation
   221,152.50 : 333,561 = 333,561 : x
2. Step 2: Convert to fraction form
   221,152.50/333,561 = 333,561/x
3. Step 3: Cross multiply
   221,152.50x = 333,561 × 333,561
4. Step 4: Simplify right side
   221,152.50x = 111,262,940,721
5. Step 5: Solve for x
   x = 111,262,940,721/221,152.50
6. Step 6: Final answer
   x = 503,105.06