Finding the Third Proportional to 647,209 and 1,408,048

Step by Step Solution

1. Step 1: Write the proportion equation
   647,209 : 1,408,048 = 1,408,048 : x
2. Step 2: Convert to fraction form
   647,209/1,408,048 = 1,408,048/x
3. Step 3: Cross multiply
   647,209x = 1,408,048 × 1,408,048
4. Step 4: Simplify right side
   647,209x = 1,982,599,170,304
5. Step 5: Solve for x
   x = 1,982,599,170,304/647,209
6. Step 6: Final answer
   x = 3,063,305.93