Finding the Third Proportional to 57,216 and 123,936

Step by Step Solution

1. Step 1: Write the proportion equation
   57,216 : 123,936 = 123,936 : x
2. Step 2: Convert to fraction form
   57,216/123,936 = 123,936/x
3. Step 3: Cross multiply
   57,216x = 123,936 × 123,936
4. Step 4: Simplify right side
   57,216x = 15,360,132,096
5. Step 5: Solve for x
   x = 15,360,132,096/57,216
6. Step 6: Final answer
   x = 268,458.68