Finding the Third Proportional to 638,016 and 1,391,940

Step by Step Solution

1. Step 1: Write the proportion equation
   638,016 : 1,391,940 = 1,391,940 : x
2. Step 2: Convert to fraction form
   638,016/1,391,940 = 1,391,940/x
3. Step 3: Cross multiply
   638,016x = 1,391,940 × 1,391,940
4. Step 4: Simplify right side
   638,016x = 1,937,496,963,600
5. Step 5: Solve for x
   x = 1,937,496,963,600/638,016
6. Step 6: Final answer
   x = 3,036,752.94