Finding the Third Proportional to 3,858,648 and 8,381,568

Step by Step Solution

1. Step 1: Write the proportion equation
   3,858,648 : 8,381,568 = 8,381,568 : x
2. Step 2: Convert to fraction form
   3,858,648/8,381,568 = 8,381,568/x
3. Step 3: Cross multiply
   3,858,648x = 8,381,568 × 8,381,568
4. Step 4: Simplify right side
   3,858,648x = 70,250,682,138,624
5. Step 5: Solve for x
   x = 70,250,682,138,624/3,858,648
6. Step 6: Final answer
   x = 18,206,035.41