Finding the Third Proportional to 3,490,855 and 7,404,278

Step by Step Solution

1. Step 1: Write the proportion equation
   3,490,855 : 7,404,278 = 7,404,278 : x
2. Step 2: Convert to fraction form
   3,490,855/7,404,278 = 7,404,278/x
3. Step 3: Cross multiply
   3,490,855x = 7,404,278 × 7,404,278
4. Step 4: Simplify right side
   3,490,855x = 54,823,332,701,284
5. Step 5: Solve for x
   x = 54,823,332,701,284/3,490,855
6. Step 6: Final answer
   x = 15,704,843.86