Finding the Third Proportional to 251,596 and 404,000

Step by Step Solution

1. Step 1: Write the proportion equation
   251,596 : 404,000 = 404,000 : x
2. Step 2: Convert to fraction form
   251,596/404,000 = 404,000/x
3. Step 3: Cross multiply
   251,596x = 404,000 × 404,000
4. Step 4: Simplify right side
   251,596x = 163,216,000,000
5. Step 5: Solve for x
   x = 163,216,000,000/251,596
6. Step 6: Final answer
   x = 648,722.56