Finding the Third Proportional to 674,470 and 1,396,488

Step by Step Solution

1. Step 1: Write the proportion equation
   674,470 : 1,396,488 = 1,396,488 : x
2. Step 2: Convert to fraction form
   674,470/1,396,488 = 1,396,488/x
3. Step 3: Cross multiply
   674,470x = 1,396,488 × 1,396,488
4. Step 4: Simplify right side
   674,470x = 1,950,178,734,144
5. Step 5: Solve for x
   x = 1,950,178,734,144/674,470
6. Step 6: Final answer
   x = 2,891,423.98