Finding the Third Proportional to 648,259 and 981,336

Step by Step Solution

1. Step 1: Write the proportion equation
   648,259 : 981,336 = 981,336 : x
2. Step 2: Convert to fraction form
   648,259/981,336 = 981,336/x
3. Step 3: Cross multiply
   648,259x = 981,336 × 981,336
4. Step 4: Simplify right side
   648,259x = 963,020,344,896
5. Step 5: Solve for x
   x = 963,020,344,896/648,259
6. Step 6: Final answer
   x = 1,485,548.75