Finding the Third Proportional to 11,931 and 17,531.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,931 : 17,531.25 = 17,531.25 : x
2. Step 2: Convert to fraction form
   11,931/17,531.25 = 17,531.25/x
3. Step 3: Cross multiply
   11,931x = 17,531.25 × 17,531.25
4. Step 4: Simplify right side
   11,931x = 307,344,726.56
5. Step 5: Solve for x
   x = 307,344,726.56/11,931
6. Step 6: Final answer
   x = 25,760.18