Finding the Third Proportional to 406,517.25 and 858,819

Step by Step Solution

1. Step 1: Write the proportion equation
   406,517.25 : 858,819 = 858,819 : x
2. Step 2: Convert to fraction form
   406,517.25/858,819 = 858,819/x
3. Step 3: Cross multiply
   406,517.25x = 858,819 × 858,819
4. Step 4: Simplify right side
   406,517.25x = 737,570,074,761
5. Step 5: Solve for x
   x = 737,570,074,761/406,517.25
6. Step 6: Final answer
   x = 1,814,363.54