Finding the Third Proportional to 8,602 and 12,279

Step by Step Solution

1. Step 1: Write the proportion equation
   8,602 : 12,279 = 12,279 : x
2. Step 2: Convert to fraction form
   8,602/12,279 = 12,279/x
3. Step 3: Cross multiply
   8,602x = 12,279 × 12,279
4. Step 4: Simplify right side
   8,602x = 150,773,841
5. Step 5: Solve for x
   x = 150,773,841/8,602
6. Step 6: Final answer
   x = 17,527.77