Finding the Third Proportional to 401,612 and 844,640

Step by Step Solution

1. Step 1: Write the proportion equation
   401,612 : 844,640 = 844,640 : x
2. Step 2: Convert to fraction form
   401,612/844,640 = 844,640/x
3. Step 3: Cross multiply
   401,612x = 844,640 × 844,640
4. Step 4: Simplify right side
   401,612x = 713,416,729,600
5. Step 5: Solve for x
   x = 713,416,729,600/401,612
6. Step 6: Final answer
   x = 1,776,383.00