Finding the Third Proportional to 644,289 and 1,333,170

Step by Step Solution

1. Step 1: Write the proportion equation
   644,289 : 1,333,170 = 1,333,170 : x
2. Step 2: Convert to fraction form
   644,289/1,333,170 = 1,333,170/x
3. Step 3: Cross multiply
   644,289x = 1,333,170 × 1,333,170
4. Step 4: Simplify right side
   644,289x = 1,777,342,248,900
5. Step 5: Solve for x
   x = 1,777,342,248,900/644,289
6. Step 6: Final answer
   x = 2,758,610.26