Finding the Third Proportional to 287,736 and 632,584

Step by Step Solution

1. Step 1: Write the proportion equation
   287,736 : 632,584 = 632,584 : x
2. Step 2: Convert to fraction form
   287,736/632,584 = 632,584/x
3. Step 3: Cross multiply
   287,736x = 632,584 × 632,584
4. Step 4: Simplify right side
   287,736x = 400,162,517,056
5. Step 5: Solve for x
   x = 400,162,517,056/287,736
6. Step 6: Final answer
   x = 1,390,728.02