Finding the Third Proportional to 216,575 and 333,320

Step by Step Solution

1. Step 1: Write the proportion equation
   216,575 : 333,320 = 333,320 : x
2. Step 2: Convert to fraction form
   216,575/333,320 = 333,320/x
3. Step 3: Cross multiply
   216,575x = 333,320 × 333,320
4. Step 4: Simplify right side
   216,575x = 111,102,222,400
5. Step 5: Solve for x
   x = 111,102,222,400/216,575
6. Step 6: Final answer
   x = 512,996.52