Finding the Third Proportional to 3,939,540 and 8,467,588

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,540 : 8,467,588 = 8,467,588 : x
2. Step 2: Convert to fraction form
   3,939,540/8,467,588 = 8,467,588/x
3. Step 3: Cross multiply
   3,939,540x = 8,467,588 × 8,467,588
4. Step 4: Simplify right side
   3,939,540x = 71,700,046,537,744
5. Step 5: Solve for x
   x = 71,700,046,537,744/3,939,540
6. Step 6: Final answer
   x = 18,200,106.24