Finding the Third Proportional to 245,208 and 329,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,208 : 329,521.50 = 329,521.50 : x
2. Step 2: Convert to fraction form
   245,208/329,521.50 = 329,521.50/x
3. Step 3: Cross multiply
   245,208x = 329,521.50 × 329,521.50
4. Step 4: Simplify right side
   245,208x = 108,584,418,962.25
5. Step 5: Solve for x
   x = 108,584,418,962.25/245,208
6. Step 6: Final answer
   x = 442,825.76