Finding the Third Proportional to 3,530,397 and 7,620,666

Step by Step Solution

1. Step 1: Write the proportion equation
   3,530,397 : 7,620,666 = 7,620,666 : x
2. Step 2: Convert to fraction form
   3,530,397/7,620,666 = 7,620,666/x
3. Step 3: Cross multiply
   3,530,397x = 7,620,666 × 7,620,666
4. Step 4: Simplify right side
   3,530,397x = 58,074,550,283,556
5. Step 5: Solve for x
   x = 58,074,550,283,556/3,530,397
6. Step 6: Final answer
   x = 16,449,863.93