Finding the Third Proportional to 3,405,564 and 5,122,648

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,564 : 5,122,648 = 5,122,648 : x
2. Step 2: Convert to fraction form
   3,405,564/5,122,648 = 5,122,648/x
3. Step 3: Cross multiply
   3,405,564x = 5,122,648 × 5,122,648
4. Step 4: Simplify right side
   3,405,564x = 26,241,522,531,904
5. Step 5: Solve for x
   x = 26,241,522,531,904/3,405,564
6. Step 6: Final answer
   x = 7,705,485.06