Finding the Third Proportional to 404,842 and 654,648

Step by Step Solution

1. Step 1: Write the proportion equation
   404,842 : 654,648 = 654,648 : x
2. Step 2: Convert to fraction form
   404,842/654,648 = 654,648/x
3. Step 3: Cross multiply
   404,842x = 654,648 × 654,648
4. Step 4: Simplify right side
   404,842x = 428,564,003,904
5. Step 5: Solve for x
   x = 428,564,003,904/404,842
6. Step 6: Final answer
   x = 1,058,595.71