Finding the Third Proportional to 2,689 and 5,670

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689 : 5,670 = 5,670 : x
2. Step 2: Convert to fraction form
   2,689/5,670 = 5,670/x
3. Step 3: Cross multiply
   2,689x = 5,670 × 5,670
4. Step 4: Simplify right side
   2,689x = 32,148,900
5. Step 5: Solve for x
   x = 32,148,900/2,689
6. Step 6: Final answer
   x = 11,955.71