Finding the Third Proportional to 5,871,786 and 8,268,543

Step by Step Solution

1. Step 1: Write the proportion equation
   5,871,786 : 8,268,543 = 8,268,543 : x
2. Step 2: Convert to fraction form
   5,871,786/8,268,543 = 8,268,543/x
3. Step 3: Cross multiply
   5,871,786x = 8,268,543 × 8,268,543
4. Step 4: Simplify right side
   5,871,786x = 68,368,803,342,849
5. Step 5: Solve for x
   x = 68,368,803,342,849/5,871,786
6. Step 6: Final answer
   x = 11,643,612.92