Finding the Third Proportional to 389,256 and 836,710

Step by Step Solution

1. Step 1: Write the proportion equation
   389,256 : 836,710 = 836,710 : x
2. Step 2: Convert to fraction form
   389,256/836,710 = 836,710/x
3. Step 3: Cross multiply
   389,256x = 836,710 × 836,710
4. Step 4: Simplify right side
   389,256x = 700,083,624,100
5. Step 5: Solve for x
   x = 700,083,624,100/389,256
6. Step 6: Final answer
   x = 1,798,517.23