Finding the Third Proportional to 154,564 and 329,540

Step by Step Solution

1. Step 1: Write the proportion equation
   154,564 : 329,540 = 329,540 : x
2. Step 2: Convert to fraction form
   154,564/329,540 = 329,540/x
3. Step 3: Cross multiply
   154,564x = 329,540 × 329,540
4. Step 4: Simplify right side
   154,564x = 108,596,611,600
5. Step 5: Solve for x
   x = 108,596,611,600/154,564
6. Step 6: Final answer
   x = 702,599.65