Finding the Third Proportional to 406,290 and 875,019

Step by Step Solution

1. Step 1: Write the proportion equation
   406,290 : 875,019 = 875,019 : x
2. Step 2: Convert to fraction form
   406,290/875,019 = 875,019/x
3. Step 3: Cross multiply
   406,290x = 875,019 × 875,019
4. Step 4: Simplify right side
   406,290x = 765,658,250,361
5. Step 5: Solve for x
   x = 765,658,250,361/406,290
6. Step 6: Final answer
   x = 1,884,511.68