Finding the Third Proportional to 12,491.75 and 26,387.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,491.75 : 26,387.25 = 26,387.25 : x
2. Step 2: Convert to fraction form
   12,491.75/26,387.25 = 26,387.25/x
3. Step 3: Cross multiply
   12,491.75x = 26,387.25 × 26,387.25
4. Step 4: Simplify right side
   12,491.75x = 696,286,962.56
5. Step 5: Solve for x
   x = 696,286,962.56/12,491.75
6. Step 6: Final answer
   x = 55,739.75