Finding the Third Proportional to 10,145,778 and 21,728,103

Step by Step Solution

1. Step 1: Write the proportion equation
   10,145,778 : 21,728,103 = 21,728,103 : x
2. Step 2: Convert to fraction form
   10,145,778/21,728,103 = 21,728,103/x
3. Step 3: Cross multiply
   10,145,778x = 21,728,103 × 21,728,103
4. Step 4: Simplify right side
   10,145,778x = 472,110,459,978,609
5. Step 5: Solve for x
   x = 472,110,459,978,609/10,145,778
6. Step 6: Final answer
   x = 46,532,701.58