Finding the Third Proportional to 398,927 and 853,892

Step by Step Solution

1. Step 1: Write the proportion equation
   398,927 : 853,892 = 853,892 : x
2. Step 2: Convert to fraction form
   398,927/853,892 = 853,892/x
3. Step 3: Cross multiply
   398,927x = 853,892 × 853,892
4. Step 4: Simplify right side
   398,927x = 729,131,547,664
5. Step 5: Solve for x
   x = 729,131,547,664/398,927
6. Step 6: Final answer
   x = 1,827,731.76