Finding the Third Proportional to 823,065 and 1,236,789

Step by Step Solution

1. Step 1: Write the proportion equation
   823,065 : 1,236,789 = 1,236,789 : x
2. Step 2: Convert to fraction form
   823,065/1,236,789 = 1,236,789/x
3. Step 3: Cross multiply
   823,065x = 1,236,789 × 1,236,789
4. Step 4: Simplify right side
   823,065x = 1,529,647,030,521
5. Step 5: Solve for x
   x = 1,529,647,030,521/823,065
6. Step 6: Final answer
   x = 1,858,476.59