Finding the Third Proportional to 407,085.75 and 858,762

Step by Step Solution

1. Step 1: Write the proportion equation
   407,085.75 : 858,762 = 858,762 : x
2. Step 2: Convert to fraction form
   407,085.75/858,762 = 858,762/x
3. Step 3: Cross multiply
   407,085.75x = 858,762 × 858,762
4. Step 4: Simplify right side
   407,085.75x = 737,472,172,644
5. Step 5: Solve for x
   x = 737,472,172,644/407,085.75
6. Step 6: Final answer
   x = 1,811,589.26