Finding the Third Proportional to 217,932 and 333,240

Step by Step Solution

1. Step 1: Write the proportion equation
   217,932 : 333,240 = 333,240 : x
2. Step 2: Convert to fraction form
   217,932/333,240 = 333,240/x
3. Step 3: Cross multiply
   217,932x = 333,240 × 333,240
4. Step 4: Simplify right side
   217,932x = 111,048,897,600
5. Step 5: Solve for x
   x = 111,048,897,600/217,932
6. Step 6: Final answer
   x = 509,557.56