Finding the Third Proportional to 12,087.75 and 26,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,087.75 : 26,389.50 = 26,389.50 : x
2. Step 2: Convert to fraction form
   12,087.75/26,389.50 = 26,389.50/x
3. Step 3: Cross multiply
   12,087.75x = 26,389.50 × 26,389.50
4. Step 4: Simplify right side
   12,087.75x = 696,405,710.25
5. Step 5: Solve for x
   x = 696,405,710.25/12,087.75
6. Step 6: Final answer
   x = 57,612.52