Finding the Third Proportional to 4,446,990 and 9,707,202

Step by Step Solution

1. Step 1: Write the proportion equation
   4,446,990 : 9,707,202 = 9,707,202 : x
2. Step 2: Convert to fraction form
   4,446,990/9,707,202 = 9,707,202/x
3. Step 3: Cross multiply
   4,446,990x = 9,707,202 × 9,707,202
4. Step 4: Simplify right side
   4,446,990x = 94,229,770,668,804
5. Step 5: Solve for x
   x = 94,229,770,668,804/4,446,990
6. Step 6: Final answer
   x = 21,189,562.08