Finding the Third Proportional to 339,446 and 746,662

Step by Step Solution

1. Step 1: Write the proportion equation
   339,446 : 746,662 = 746,662 : x
2. Step 2: Convert to fraction form
   339,446/746,662 = 746,662/x
3. Step 3: Cross multiply
   339,446x = 746,662 × 746,662
4. Step 4: Simplify right side
   339,446x = 557,504,142,244
5. Step 5: Solve for x
   x = 557,504,142,244/339,446
6. Step 6: Final answer
   x = 1,642,394.20