Finding the Third Proportional to 297,792 and 648,072

Step by Step Solution

1. Step 1: Write the proportion equation
   297,792 : 648,072 = 648,072 : x
2. Step 2: Convert to fraction form
   297,792/648,072 = 648,072/x
3. Step 3: Cross multiply
   297,792x = 648,072 × 648,072
4. Step 4: Simplify right side
   297,792x = 419,997,317,184
5. Step 5: Solve for x
   x = 419,997,317,184/297,792
6. Step 6: Final answer
   x = 1,410,371.39