Finding the Third Proportional to 638,454 and 1,336,049

Step by Step Solution

1. Step 1: Write the proportion equation
   638,454 : 1,336,049 = 1,336,049 : x
2. Step 2: Convert to fraction form
   638,454/1,336,049 = 1,336,049/x
3. Step 3: Cross multiply
   638,454x = 1,336,049 × 1,336,049
4. Step 4: Simplify right side
   638,454x = 1,785,026,930,401
5. Step 5: Solve for x
   x = 1,785,026,930,401/638,454
6. Step 6: Final answer
   x = 2,795,858.32