Finding the Third Proportional to 406,262 and 865,012

Step by Step Solution

1. Step 1: Write the proportion equation
   406,262 : 865,012 = 865,012 : x
2. Step 2: Convert to fraction form
   406,262/865,012 = 865,012/x
3. Step 3: Cross multiply
   406,262x = 865,012 × 865,012
4. Step 4: Simplify right side
   406,262x = 748,245,760,144
5. Step 5: Solve for x
   x = 748,245,760,144/406,262
6. Step 6: Final answer
   x = 1,841,781.31