Finding the Third Proportional to 1,456,421 and 2,261,311

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456,421 : 2,261,311 = 2,261,311 : x
2. Step 2: Convert to fraction form
   1,456,421/2,261,311 = 2,261,311/x
3. Step 3: Cross multiply
   1,456,421x = 2,261,311 × 2,261,311
4. Step 4: Simplify right side
   1,456,421x = 5,113,527,438,721
5. Step 5: Solve for x
   x = 5,113,527,438,721/1,456,421
6. Step 6: Final answer
   x = 3,511,022.87