Finding the Third Proportional to 665,286 and 1,042,436

Step by Step Solution

1. Step 1: Write the proportion equation
   665,286 : 1,042,436 = 1,042,436 : x
2. Step 2: Convert to fraction form
   665,286/1,042,436 = 1,042,436/x
3. Step 3: Cross multiply
   665,286x = 1,042,436 × 1,042,436
4. Step 4: Simplify right side
   665,286x = 1,086,672,814,096
5. Step 5: Solve for x
   x = 1,086,672,814,096/665,286
6. Step 6: Final answer
   x = 1,633,391.98