Finding the Third Proportional to 287,052 and 448,020

Step by Step Solution

1. Step 1: Write the proportion equation
   287,052 : 448,020 = 448,020 : x
2. Step 2: Convert to fraction form
   287,052/448,020 = 448,020/x
3. Step 3: Cross multiply
   287,052x = 448,020 × 448,020
4. Step 4: Simplify right side
   287,052x = 200,721,920,400
5. Step 5: Solve for x
   x = 200,721,920,400/287,052
6. Step 6: Final answer
   x = 699,252.82