Finding the Third Proportional to 418,377 and 858,806.25

Step by Step Solution

1. Step 1: Write the proportion equation
   418,377 : 858,806.25 = 858,806.25 : x
2. Step 2: Convert to fraction form
   418,377/858,806.25 = 858,806.25/x
3. Step 3: Cross multiply
   418,377x = 858,806.25 × 858,806.25
4. Step 4: Simplify right side
   418,377x = 737,548,175,039.06
5. Step 5: Solve for x
   x = 737,548,175,039.06/418,377
6. Step 6: Final answer
   x = 1,762,879.35