Finding the Third Proportional to 56,708 and 123,778

Step by Step Solution

1. Step 1: Write the proportion equation
   56,708 : 123,778 = 123,778 : x
2. Step 2: Convert to fraction form
   56,708/123,778 = 123,778/x
3. Step 3: Cross multiply
   56,708x = 123,778 × 123,778
4. Step 4: Simplify right side
   56,708x = 15,320,993,284
5. Step 5: Solve for x
   x = 15,320,993,284/56,708
6. Step 6: Final answer
   x = 270,173.40