Finding the Third Proportional to 584,424 and 855,616.50

Step by Step Solution

1. Step 1: Write the proportion equation
   584,424 : 855,616.50 = 855,616.50 : x
2. Step 2: Convert to fraction form
   584,424/855,616.50 = 855,616.50/x
3. Step 3: Cross multiply
   584,424x = 855,616.50 × 855,616.50
4. Step 4: Simplify right side
   584,424x = 732,079,595,072.25
5. Step 5: Solve for x
   x = 732,079,595,072.25/584,424
6. Step 6: Final answer
   x = 1,252,651.49