Finding the Third Proportional to 6,864 and 10,980

Step by Step Solution

1. Step 1: Write the proportion equation
   6,864 : 10,980 = 10,980 : x
2. Step 2: Convert to fraction form
   6,864/10,980 = 10,980/x
3. Step 3: Cross multiply
   6,864x = 10,980 × 10,980
4. Step 4: Simplify right side
   6,864x = 120,560,400
5. Step 5: Solve for x
   x = 120,560,400/6,864
6. Step 6: Final answer
   x = 17,564.16