Finding the Third Proportional to 3,556,122 and 8,389,473

Step by Step Solution

1. Step 1: Write the proportion equation
   3,556,122 : 8,389,473 = 8,389,473 : x
2. Step 2: Convert to fraction form
   3,556,122/8,389,473 = 8,389,473/x
3. Step 3: Cross multiply
   3,556,122x = 8,389,473 × 8,389,473
4. Step 4: Simplify right side
   3,556,122x = 70,383,257,217,729
5. Step 5: Solve for x
   x = 70,383,257,217,729/3,556,122
6. Step 6: Final answer
   x = 19,792,137.96