Finding the Third Proportional to 638,739 and 1,401,894

Step by Step Solution

1. Step 1: Write the proportion equation
   638,739 : 1,401,894 = 1,401,894 : x
2. Step 2: Convert to fraction form
   638,739/1,401,894 = 1,401,894/x
3. Step 3: Cross multiply
   638,739x = 1,401,894 × 1,401,894
4. Step 4: Simplify right side
   638,739x = 1,965,306,787,236
5. Step 5: Solve for x
   x = 1,965,306,787,236/638,739
6. Step 6: Final answer
   x = 3,076,854.22