Finding the Third Proportional to 11,578 and 17,939

Step by Step Solution

1. Step 1: Write the proportion equation
   11,578 : 17,939 = 17,939 : x
2. Step 2: Convert to fraction form
   11,578/17,939 = 17,939/x
3. Step 3: Cross multiply
   11,578x = 17,939 × 17,939
4. Step 4: Simplify right side
   11,578x = 321,807,721
5. Step 5: Solve for x
   x = 321,807,721/11,578
6. Step 6: Final answer
   x = 27,794.76