Finding the Third Proportional to 12,015.50 and 25,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,015.50 : 25,691.50 = 25,691.50 : x
2. Step 2: Convert to fraction form
   12,015.50/25,691.50 = 25,691.50/x
3. Step 3: Cross multiply
   12,015.50x = 25,691.50 × 25,691.50
4. Step 4: Simplify right side
   12,015.50x = 660,053,172.25
5. Step 5: Solve for x
   x = 660,053,172.25/12,015.50
6. Step 6: Final answer
   x = 54,933.48