Finding the Third Proportional to 287,040 and 448,002

Step by Step Solution

1. Step 1: Write the proportion equation
   287,040 : 448,002 = 448,002 : x
2. Step 2: Convert to fraction form
   287,040/448,002 = 448,002/x
3. Step 3: Cross multiply
   287,040x = 448,002 × 448,002
4. Step 4: Simplify right side
   287,040x = 200,705,792,004
5. Step 5: Solve for x
   x = 200,705,792,004/287,040
6. Step 6: Final answer
   x = 699,225.86