Finding the Third Proportional to 3,405,546 and 5,122,620

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,546 : 5,122,620 = 5,122,620 : x
2. Step 2: Convert to fraction form
   3,405,546/5,122,620 = 5,122,620/x
3. Step 3: Cross multiply
   3,405,546x = 5,122,620 × 5,122,620
4. Step 4: Simplify right side
   3,405,546x = 26,241,235,664,400
5. Step 5: Solve for x
   x = 26,241,235,664,400/3,405,546
6. Step 6: Final answer
   x = 7,705,441.55