Finding the Third Proportional to 1,438,016 and 2,289,275

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438,016 : 2,289,275 = 2,289,275 : x
2. Step 2: Convert to fraction form
   1,438,016/2,289,275 = 2,289,275/x
3. Step 3: Cross multiply
   1,438,016x = 2,289,275 × 2,289,275
4. Step 4: Simplify right side
   1,438,016x = 5,240,780,025,625
5. Step 5: Solve for x
   x = 5,240,780,025,625/1,438,016
6. Step 6: Final answer
   x = 3,644,451.82