Finding the Third Proportional to 648,210.50 and 981,259

Step by Step Solution

1. Step 1: Write the proportion equation
   648,210.50 : 981,259 = 981,259 : x
2. Step 2: Convert to fraction form
   648,210.50/981,259 = 981,259/x
3. Step 3: Cross multiply
   648,210.50x = 981,259 × 981,259
4. Step 4: Simplify right side
   648,210.50x = 962,869,225,081
5. Step 5: Solve for x
   x = 962,869,225,081/648,210.50
6. Step 6: Final answer
   x = 1,485,426.76