Finding the Third Proportional to 2,686,669 and 5,676,578

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686,669 : 5,676,578 = 5,676,578 : x
2. Step 2: Convert to fraction form
   2,686,669/5,676,578 = 5,676,578/x
3. Step 3: Cross multiply
   2,686,669x = 5,676,578 × 5,676,578
4. Step 4: Simplify right side
   2,686,669x = 32,223,537,790,084
5. Step 5: Solve for x
   x = 32,223,537,790,084/2,686,669
6. Step 6: Final answer
   x = 11,993,862.21