Finding the Third Proportional to 11,520 and 18,371.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,520 : 18,371.25 = 18,371.25 : x
2. Step 2: Convert to fraction form
   11,520/18,371.25 = 18,371.25/x
3. Step 3: Cross multiply
   11,520x = 18,371.25 × 18,371.25
4. Step 4: Simplify right side
   11,520x = 337,502,826.56
5. Step 5: Solve for x
   x = 337,502,826.56/11,520
6. Step 6: Final answer
   x = 29,297.12