Finding the Third Proportional to 11,379 and 12,579

Step by Step Solution

1. Step 1: Write the proportion equation
   11,379 : 12,579 = 12,579 : x
2. Step 2: Convert to fraction form
   11,379/12,579 = 12,579/x
3. Step 3: Cross multiply
   11,379x = 12,579 × 12,579
4. Step 4: Simplify right side
   11,379x = 158,231,241
5. Step 5: Solve for x
   x = 158,231,241/11,379
6. Step 6: Final answer
   x = 13,905.55