Finding the Third Proportional to 5,709,634 and 8,406,739

Step by Step Solution

1. Step 1: Write the proportion equation
   5,709,634 : 8,406,739 = 8,406,739 : x
2. Step 2: Convert to fraction form
   5,709,634/8,406,739 = 8,406,739/x
3. Step 3: Cross multiply
   5,709,634x = 8,406,739 × 8,406,739
4. Step 4: Simplify right side
   5,709,634x = 70,673,260,614,121
5. Step 5: Solve for x
   x = 70,673,260,614,121/5,709,634
6. Step 6: Final answer
   x = 12,377,896.83