Finding the Third Proportional to 3,939,512 and 8,467,540

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,512 : 8,467,540 = 8,467,540 : x
2. Step 2: Convert to fraction form
   3,939,512/8,467,540 = 8,467,540/x
3. Step 3: Cross multiply
   3,939,512x = 8,467,540 × 8,467,540
4. Step 4: Simplify right side
   3,939,512x = 71,699,233,651,600
5. Step 5: Solve for x
   x = 71,699,233,651,600/3,939,512
6. Step 6: Final answer
   x = 18,200,029.26