Finding the Third Proportional to 3,286,704 and 7,178,278

Step by Step Solution

1. Step 1: Write the proportion equation
   3,286,704 : 7,178,278 = 7,178,278 : x
2. Step 2: Convert to fraction form
   3,286,704/7,178,278 = 7,178,278/x
3. Step 3: Cross multiply
   3,286,704x = 7,178,278 × 7,178,278
4. Step 4: Simplify right side
   3,286,704x = 51,527,675,045,284
5. Step 5: Solve for x
   x = 51,527,675,045,284/3,286,704
6. Step 6: Final answer
   x = 15,677,613.51