Finding the Third Proportional to 11,881.69 and 18,571.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,881.69 : 18,571.78 = 18,571.78 : x
2. Step 2: Convert to fraction form
   11,881.69/18,571.78 = 18,571.78/x
3. Step 3: Cross multiply
   11,881.69x = 18,571.78 × 18,571.78
4. Step 4: Simplify right side
   11,881.69x = 344,911,058.80
5. Step 5: Solve for x
   x = 344,911,058.80/11,881.69
6. Step 6: Final answer
   x = 29,028.79