Finding the Third Proportional to 648,354 and 1,041,728

Step by Step Solution

1. Step 1: Write the proportion equation
   648,354 : 1,041,728 = 1,041,728 : x
2. Step 2: Convert to fraction form
   648,354/1,041,728 = 1,041,728/x
3. Step 3: Cross multiply
   648,354x = 1,041,728 × 1,041,728
4. Step 4: Simplify right side
   648,354x = 1,085,197,225,984
5. Step 5: Solve for x
   x = 1,085,197,225,984/648,354
6. Step 6: Final answer
   x = 1,673,772.70