Finding the Third Proportional to 123,758 and 254,078

Step by Step Solution

1. Step 1: Write the proportion equation
   123,758 : 254,078 = 254,078 : x
2. Step 2: Convert to fraction form
   123,758/254,078 = 254,078/x
3. Step 3: Cross multiply
   123,758x = 254,078 × 254,078
4. Step 4: Simplify right side
   123,758x = 64,555,630,084
5. Step 5: Solve for x
   x = 64,555,630,084/123,758
6. Step 6: Final answer
   x = 521,627.94