Finding the Third Proportional to 218,200.71 and 338,651.82

Step by Step Solution

1. Step 1: Write the proportion equation
   218,200.71 : 338,651.82 = 338,651.82 : x
2. Step 2: Convert to fraction form
   218,200.71/338,651.82 = 338,651.82/x
3. Step 3: Cross multiply
   218,200.71x = 338,651.82 × 338,651.82
4. Step 4: Simplify right side
   218,200.71x = 114,685,058,046.69
5. Step 5: Solve for x
   x = 114,685,058,046.69/218,200.71
6. Step 6: Final answer
   x = 525,594.34