Finding the Third Proportional to 3,405,558 and 5,122,638

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,558 : 5,122,638 = 5,122,638 : x
2. Step 2: Convert to fraction form
   3,405,558/5,122,638 = 5,122,638/x
3. Step 3: Cross multiply
   3,405,558x = 5,122,638 × 5,122,638
4. Step 4: Simplify right side
   3,405,558x = 26,241,420,079,044
5. Step 5: Solve for x
   x = 26,241,420,079,044/3,405,558
6. Step 6: Final answer
   x = 7,705,468.55