Finding the Third Proportional to 401,067 and 891,789

Step by Step Solution

1. Step 1: Write the proportion equation
   401,067 : 891,789 = 891,789 : x
2. Step 2: Convert to fraction form
   401,067/891,789 = 891,789/x
3. Step 3: Cross multiply
   401,067x = 891,789 × 891,789
4. Step 4: Simplify right side
   401,067x = 795,287,620,521
5. Step 5: Solve for x
   x = 795,287,620,521/401,067
6. Step 6: Final answer
   x = 1,982,929.59