Finding the Third Proportional to 250,448 and 542,648

Step by Step Solution

1. Step 1: Write the proportion equation
   250,448 : 542,648 = 542,648 : x
2. Step 2: Convert to fraction form
   250,448/542,648 = 542,648/x
3. Step 3: Cross multiply
   250,448x = 542,648 × 542,648
4. Step 4: Simplify right side
   250,448x = 294,466,851,904
5. Step 5: Solve for x
   x = 294,466,851,904/250,448
6. Step 6: Final answer
   x = 1,175,760.44