Finding the Third Proportional to 487,919 and 1,057,288

Step by Step Solution

1. Step 1: Write the proportion equation
   487,919 : 1,057,288 = 1,057,288 : x
2. Step 2: Convert to fraction form
   487,919/1,057,288 = 1,057,288/x
3. Step 3: Cross multiply
   487,919x = 1,057,288 × 1,057,288
4. Step 4: Simplify right side
   487,919x = 1,117,857,914,944
5. Step 5: Solve for x
   x = 1,117,857,914,944/487,919
6. Step 6: Final answer
   x = 2,291,072.73