Finding the Third Proportional to 8,320 and 13,173

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320 : 13,173 = 13,173 : x
2. Step 2: Convert to fraction form
   8,320/13,173 = 13,173/x
3. Step 3: Cross multiply
   8,320x = 13,173 × 13,173
4. Step 4: Simplify right side
   8,320x = 173,527,929
5. Step 5: Solve for x
   x = 173,527,929/8,320
6. Step 6: Final answer
   x = 20,856.72