Finding the Third Proportional to 665,286 and 1,042,434

Step by Step Solution

1. Step 1: Write the proportion equation
   665,286 : 1,042,434 = 1,042,434 : x
2. Step 2: Convert to fraction form
   665,286/1,042,434 = 1,042,434/x
3. Step 3: Cross multiply
   665,286x = 1,042,434 × 1,042,434
4. Step 4: Simplify right side
   665,286x = 1,086,668,644,356
5. Step 5: Solve for x
   x = 1,086,668,644,356/665,286
6. Step 6: Final answer
   x = 1,633,385.71