Finding the Third Proportional to 768,684 and 1,123,404

Step by Step Solution

1. Step 1: Write the proportion equation
   768,684 : 1,123,404 = 1,123,404 : x
2. Step 2: Convert to fraction form
   768,684/1,123,404 = 1,123,404/x
3. Step 3: Cross multiply
   768,684x = 1,123,404 × 1,123,404
4. Step 4: Simplify right side
   768,684x = 1,262,036,547,216
5. Step 5: Solve for x
   x = 1,262,036,547,216/768,684
6. Step 6: Final answer
   x = 1,641,814.51