Finding the Third Proportional to 12,151.50 and 25,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,151.50 : 25,987.50 = 25,987.50 : x
2. Step 2: Convert to fraction form
   12,151.50/25,987.50 = 25,987.50/x
3. Step 3: Cross multiply
   12,151.50x = 25,987.50 × 25,987.50
4. Step 4: Simplify right side
   12,151.50x = 675,350,156.25
5. Step 5: Solve for x
   x = 675,350,156.25/12,151.50
6. Step 6: Final answer
   x = 55,577.51