Finding the Third Proportional to 12,111.75 and 26,138.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.75 : 26,138.25 = 26,138.25 : x
2. Step 2: Convert to fraction form
   12,111.75/26,138.25 = 26,138.25/x
3. Step 3: Cross multiply
   12,111.75x = 26,138.25 × 26,138.25
4. Step 4: Simplify right side
   12,111.75x = 683,208,113.06
5. Step 5: Solve for x
   x = 683,208,113.06/12,111.75
6. Step 6: Final answer
   x = 56,408.70