Finding the Third Proportional to 394,767 and 830,785.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,767 : 830,785.50 = 830,785.50 : x
2. Step 2: Convert to fraction form
   394,767/830,785.50 = 830,785.50/x
3. Step 3: Cross multiply
   394,767x = 830,785.50 × 830,785.50
4. Step 4: Simplify right side
   394,767x = 690,204,547,010.25
5. Step 5: Solve for x
   x = 690,204,547,010.25/394,767
6. Step 6: Final answer
   x = 1,748,384.61