Finding the Third Proportional to 12,831.75 and 27,921.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,831.75 : 27,921.38 = 27,921.38 : x
2. Step 2: Convert to fraction form
   12,831.75/27,921.38 = 27,921.38/x
3. Step 3: Cross multiply
   12,831.75x = 27,921.38 × 27,921.38
4. Step 4: Simplify right side
   12,831.75x = 779,603,181.89
5. Step 5: Solve for x
   x = 779,603,181.89/12,831.75
6. Step 6: Final answer
   x = 60,755.80