Finding the Third Proportional to 3,613,686 and 7,857,204

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613,686 : 7,857,204 = 7,857,204 : x
2. Step 2: Convert to fraction form
   3,613,686/7,857,204 = 7,857,204/x
3. Step 3: Cross multiply
   3,613,686x = 7,857,204 × 7,857,204
4. Step 4: Simplify right side
   3,613,686x = 61,735,654,697,616
5. Step 5: Solve for x
   x = 61,735,654,697,616/3,613,686
6. Step 6: Final answer
   x = 17,083,845.88