Finding the Third Proportional to 3,936,386 and 8,525,668

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936,386 : 8,525,668 = 8,525,668 : x
2. Step 2: Convert to fraction form
   3,936,386/8,525,668 = 8,525,668/x
3. Step 3: Cross multiply
   3,936,386x = 8,525,668 × 8,525,668
4. Step 4: Simplify right side
   3,936,386x = 72,687,014,846,224
5. Step 5: Solve for x
   x = 72,687,014,846,224/3,936,386
6. Step 6: Final answer
   x = 18,465,418.49