Finding the Third Proportional to 11,980 and 18,366

Step by Step Solution

1. Step 1: Write the proportion equation
   11,980 : 18,366 = 18,366 : x
2. Step 2: Convert to fraction form
   11,980/18,366 = 18,366/x
3. Step 3: Cross multiply
   11,980x = 18,366 × 18,366
4. Step 4: Simplify right side
   11,980x = 337,309,956
5. Step 5: Solve for x
   x = 337,309,956/11,980
6. Step 6: Final answer
   x = 28,156.09