Finding the Third Proportional to 3,939,172 and 8,568,526

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,172 : 8,568,526 = 8,568,526 : x
2. Step 2: Convert to fraction form
   3,939,172/8,568,526 = 8,568,526/x
3. Step 3: Cross multiply
   3,939,172x = 8,568,526 × 8,568,526
4. Step 4: Simplify right side
   3,939,172x = 73,419,637,812,676
5. Step 5: Solve for x
   x = 73,419,637,812,676/3,939,172
6. Step 6: Final answer
   x = 18,638,342.73