Finding the Third Proportional to 811,658 and 1,285,170

Step by Step Solution

1. Step 1: Write the proportion equation
   811,658 : 1,285,170 = 1,285,170 : x
2. Step 2: Convert to fraction form
   811,658/1,285,170 = 1,285,170/x
3. Step 3: Cross multiply
   811,658x = 1,285,170 × 1,285,170
4. Step 4: Simplify right side
   811,658x = 1,651,661,928,900
5. Step 5: Solve for x
   x = 1,651,661,928,900/811,658
6. Step 6: Final answer
   x = 2,034,923.49