Finding the Third Proportional to 8,320 and 12,944

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320 : 12,944 = 12,944 : x
2. Step 2: Convert to fraction form
   8,320/12,944 = 12,944/x
3. Step 3: Cross multiply
   8,320x = 12,944 × 12,944
4. Step 4: Simplify right side
   8,320x = 167,547,136
5. Step 5: Solve for x
   x = 167,547,136/8,320
6. Step 6: Final answer
   x = 20,137.88