Finding the Third Proportional to 3,493,890 and 7,407,666

Step by Step Solution

1. Step 1: Write the proportion equation
   3,493,890 : 7,407,666 = 7,407,666 : x
2. Step 2: Convert to fraction form
   3,493,890/7,407,666 = 7,407,666/x
3. Step 3: Cross multiply
   3,493,890x = 7,407,666 × 7,407,666
4. Step 4: Simplify right side
   3,493,890x = 54,873,515,567,556
5. Step 5: Solve for x
   x = 54,873,515,567,556/3,493,890
6. Step 6: Final answer
   x = 15,705,564.73