Finding the Third Proportional to 3,807,607 and 8,309,756

Step by Step Solution

1. Step 1: Write the proportion equation
   3,807,607 : 8,309,756 = 8,309,756 : x
2. Step 2: Convert to fraction form
   3,807,607/8,309,756 = 8,309,756/x
3. Step 3: Cross multiply
   3,807,607x = 8,309,756 × 8,309,756
4. Step 4: Simplify right side
   3,807,607x = 69,052,044,779,536
5. Step 5: Solve for x
   x = 69,052,044,779,536/3,807,607
6. Step 6: Final answer
   x = 18,135,286.75