Finding the Third Proportional to 6,489 and 13,662

Step by Step Solution

1. Step 1: Write the proportion equation
   6,489 : 13,662 = 13,662 : x
2. Step 2: Convert to fraction form
   6,489/13,662 = 13,662/x
3. Step 3: Cross multiply
   6,489x = 13,662 × 13,662
4. Step 4: Simplify right side
   6,489x = 186,650,244
5. Step 5: Solve for x
   x = 186,650,244/6,489
6. Step 6: Final answer
   x = 28,764.10