Finding the Third Proportional to 55,720 and 123,104

Step by Step Solution

1. Step 1: Write the proportion equation
   55,720 : 123,104 = 123,104 : x
2. Step 2: Convert to fraction form
   55,720/123,104 = 123,104/x
3. Step 3: Cross multiply
   55,720x = 123,104 × 123,104
4. Step 4: Simplify right side
   55,720x = 15,154,594,816
5. Step 5: Solve for x
   x = 15,154,594,816/55,720
6. Step 6: Final answer
   x = 271,977.65