Finding the Third Proportional to 2,639,676 and 4,117,266

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639,676 : 4,117,266 = 4,117,266 : x
2. Step 2: Convert to fraction form
   2,639,676/4,117,266 = 4,117,266/x
3. Step 3: Cross multiply
   2,639,676x = 4,117,266 × 4,117,266
4. Step 4: Simplify right side
   2,639,676x = 16,951,879,314,756
5. Step 5: Solve for x
   x = 16,951,879,314,756/2,639,676
6. Step 6: Final answer
   x = 6,421,954.56