Finding the Third Proportional to 3,960,584 and 8,489,592

Step by Step Solution

1. Step 1: Write the proportion equation
   3,960,584 : 8,489,592 = 8,489,592 : x
2. Step 2: Convert to fraction form
   3,960,584/8,489,592 = 8,489,592/x
3. Step 3: Cross multiply
   3,960,584x = 8,489,592 × 8,489,592
4. Step 4: Simplify right side
   3,960,584x = 72,073,172,326,464
5. Step 5: Solve for x
   x = 72,073,172,326,464/3,960,584
6. Step 6: Final answer
   x = 18,197,612.35