Finding the Third Proportional to 56,856 and 123,888

Step by Step Solution

1. Step 1: Write the proportion equation
   56,856 : 123,888 = 123,888 : x
2. Step 2: Convert to fraction form
   56,856/123,888 = 123,888/x
3. Step 3: Cross multiply
   56,856x = 123,888 × 123,888
4. Step 4: Simplify right side
   56,856x = 15,348,236,544
5. Step 5: Solve for x
   x = 15,348,236,544/56,856
6. Step 6: Final answer
   x = 269,949.28