Finding the Third Proportional to 3,790,206 and 8,218,770

Step by Step Solution

1. Step 1: Write the proportion equation
   3,790,206 : 8,218,770 = 8,218,770 : x
2. Step 2: Convert to fraction form
   3,790,206/8,218,770 = 8,218,770/x
3. Step 3: Cross multiply
   3,790,206x = 8,218,770 × 8,218,770
4. Step 4: Simplify right side
   3,790,206x = 67,548,180,312,900
5. Step 5: Solve for x
   x = 67,548,180,312,900/3,790,206
6. Step 6: Final answer
   x = 17,821,770.19