Finding the Third Proportional to 250,442 and 512,404

Step by Step Solution

1. Step 1: Write the proportion equation
   250,442 : 512,404 = 512,404 : x
2. Step 2: Convert to fraction form
   250,442/512,404 = 512,404/x
3. Step 3: Cross multiply
   250,442x = 512,404 × 512,404
4. Step 4: Simplify right side
   250,442x = 262,557,859,216
5. Step 5: Solve for x
   x = 262,557,859,216/250,442
6. Step 6: Final answer
   x = 1,048,377.90