Finding the Third Proportional to 123,976 and 254,486

Step by Step Solution

1. Step 1: Write the proportion equation
   123,976 : 254,486 = 254,486 : x
2. Step 2: Convert to fraction form
   123,976/254,486 = 254,486/x
3. Step 3: Cross multiply
   123,976x = 254,486 × 254,486
4. Step 4: Simplify right side
   123,976x = 64,763,124,196
5. Step 5: Solve for x
   x = 64,763,124,196/123,976
6. Step 6: Final answer
   x = 522,384.37