Finding the Third Proportional to 402,528 and 853,008

Step by Step Solution

1. Step 1: Write the proportion equation
   402,528 : 853,008 = 853,008 : x
2. Step 2: Convert to fraction form
   402,528/853,008 = 853,008/x
3. Step 3: Cross multiply
   402,528x = 853,008 × 853,008
4. Step 4: Simplify right side
   402,528x = 727,622,648,064
5. Step 5: Solve for x
   x = 727,622,648,064/402,528
6. Step 6: Final answer
   x = 1,807,632.38