Finding the Third Proportional to 216,552 and 333,285

Step by Step Solution

1. Step 1: Write the proportion equation
   216,552 : 333,285 = 333,285 : x
2. Step 2: Convert to fraction form
   216,552/333,285 = 333,285/x
3. Step 3: Cross multiply
   216,552x = 333,285 × 333,285
4. Step 4: Simplify right side
   216,552x = 111,078,891,225
5. Step 5: Solve for x
   x = 111,078,891,225/216,552
6. Step 6: Final answer
   x = 512,943.27