Finding the Third Proportional to 3,939,162 and 8,568,507

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,162 : 8,568,507 = 8,568,507 : x
2. Step 2: Convert to fraction form
   3,939,162/8,568,507 = 8,568,507/x
3. Step 3: Cross multiply
   3,939,162x = 8,568,507 × 8,568,507
4. Step 4: Simplify right side
   3,939,162x = 73,419,312,209,049
5. Step 5: Solve for x
   x = 73,419,312,209,049/3,939,162
6. Step 6: Final answer
   x = 18,638,307.39