Finding the Third Proportional to 12,919.25 and 26,386.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,919.25 : 26,386.75 = 26,386.75 : x
2. Step 2: Convert to fraction form
   12,919.25/26,386.75 = 26,386.75/x
3. Step 3: Cross multiply
   12,919.25x = 26,386.75 × 26,386.75
4. Step 4: Simplify right side
   12,919.25x = 696,260,575.56
5. Step 5: Solve for x
   x = 696,260,575.56/12,919.25
6. Step 6: Final answer
   x = 53,893.27