Finding the Third Proportional to 3,465,778 and 7,728,448

Step by Step Solution

1. Step 1: Write the proportion equation
   3,465,778 : 7,728,448 = 7,728,448 : x
2. Step 2: Convert to fraction form
   3,465,778/7,728,448 = 7,728,448/x
3. Step 3: Cross multiply
   3,465,778x = 7,728,448 × 7,728,448
4. Step 4: Simplify right side
   3,465,778x = 59,728,908,488,704
5. Step 5: Solve for x
   x = 59,728,908,488,704/3,465,778
6. Step 6: Final answer
   x = 17,233,910.68