Finding the Third Proportional to 218,330 and 333,325

Step by Step Solution

1. Step 1: Write the proportion equation
   218,330 : 333,325 = 333,325 : x
2. Step 2: Convert to fraction form
   218,330/333,325 = 333,325/x
3. Step 3: Cross multiply
   218,330x = 333,325 × 333,325
4. Step 4: Simplify right side
   218,330x = 111,105,555,625
5. Step 5: Solve for x
   x = 111,105,555,625/218,330
6. Step 6: Final answer
   x = 508,888.18