Finding the Third Proportional to 6,647 and 10,578

Step by Step Solution

1. Step 1: Write the proportion equation
   6,647 : 10,578 = 10,578 : x
2. Step 2: Convert to fraction form
   6,647/10,578 = 10,578/x
3. Step 3: Cross multiply
   6,647x = 10,578 × 10,578
4. Step 4: Simplify right side
   6,647x = 111,894,084
5. Step 5: Solve for x
   x = 111,894,084/6,647
6. Step 6: Final answer
   x = 16,833.77