Finding the Third Proportional to 1,228,687 and 1,923,289

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228,687 : 1,923,289 = 1,923,289 : x
2. Step 2: Convert to fraction form
   1,228,687/1,923,289 = 1,923,289/x
3. Step 3: Cross multiply
   1,228,687x = 1,923,289 × 1,923,289
4. Step 4: Simplify right side
   1,228,687x = 3,699,040,577,521
5. Step 5: Solve for x
   x = 3,699,040,577,521/1,228,687
6. Step 6: Final answer
   x = 3,010,563.78