Finding the Third Proportional to 359,596 and 517,980

Step by Step Solution

1. Step 1: Write the proportion equation
   359,596 : 517,980 = 517,980 : x
2. Step 2: Convert to fraction form
   359,596/517,980 = 517,980/x
3. Step 3: Cross multiply
   359,596x = 517,980 × 517,980
4. Step 4: Simplify right side
   359,596x = 268,303,280,400
5. Step 5: Solve for x
   x = 268,303,280,400/359,596
6. Step 6: Final answer
   x = 746,124.21