Finding the Third Proportional to 647,215 and 1,408,059

Step by Step Solution

1. Step 1: Write the proportion equation
   647,215 : 1,408,059 = 1,408,059 : x
2. Step 2: Convert to fraction form
   647,215/1,408,059 = 1,408,059/x
3. Step 3: Cross multiply
   647,215x = 1,408,059 × 1,408,059
4. Step 4: Simplify right side
   647,215x = 1,982,630,147,481
5. Step 5: Solve for x
   x = 1,982,630,147,481/647,215
6. Step 6: Final answer
   x = 3,063,325.40