Finding the Third Proportional to 25,678 and 56,258

Step by Step Solution

1. Step 1: Write the proportion equation
   25,678 : 56,258 = 56,258 : x
2. Step 2: Convert to fraction form
   25,678/56,258 = 56,258/x
3. Step 3: Cross multiply
   25,678x = 56,258 × 56,258
4. Step 4: Simplify right side
   25,678x = 3,164,962,564
5. Step 5: Solve for x
   x = 3,164,962,564/25,678
6. Step 6: Final answer
   x = 123,255.81