Finding the Third Proportional to 648,240 and 981,304

Step by Step Solution

1. Step 1: Write the proportion equation
   648,240 : 981,304 = 981,304 : x
2. Step 2: Convert to fraction form
   648,240/981,304 = 981,304/x
3. Step 3: Cross multiply
   648,240x = 981,304 × 981,304
4. Step 4: Simplify right side
   648,240x = 962,957,540,416
5. Step 5: Solve for x
   x = 962,957,540,416/648,240
6. Step 6: Final answer
   x = 1,485,495.40