Finding the Third Proportional to 6,680 and 10,478

Step by Step Solution

1. Step 1: Write the proportion equation
   6,680 : 10,478 = 10,478 : x
2. Step 2: Convert to fraction form
   6,680/10,478 = 10,478/x
3. Step 3: Cross multiply
   6,680x = 10,478 × 10,478
4. Step 4: Simplify right side
   6,680x = 109,788,484
5. Step 5: Solve for x
   x = 109,788,484/6,680
6. Step 6: Final answer
   x = 16,435.40