Finding the Third Proportional to 12,123 and 26,155

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123 : 26,155 = 26,155 : x
2. Step 2: Convert to fraction form
   12,123/26,155 = 26,155/x
3. Step 3: Cross multiply
   12,123x = 26,155 × 26,155
4. Step 4: Simplify right side
   12,123x = 684,084,025
5. Step 5: Solve for x
   x = 684,084,025/12,123
6. Step 6: Final answer
   x = 56,428.61