Finding the Third Proportional to 3,405,969 and 7,340,706

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,969 : 7,340,706 = 7,340,706 : x
2. Step 2: Convert to fraction form
   3,405,969/7,340,706 = 7,340,706/x
3. Step 3: Cross multiply
   3,405,969x = 7,340,706 × 7,340,706
4. Step 4: Simplify right side
   3,405,969x = 53,885,964,578,436
5. Step 5: Solve for x
   x = 53,885,964,578,436/3,405,969
6. Step 6: Final answer
   x = 15,821,037.88