Finding the Third Proportional to 644,556 and 1,399,848

Step by Step Solution

1. Step 1: Write the proportion equation
   644,556 : 1,399,848 = 1,399,848 : x
2. Step 2: Convert to fraction form
   644,556/1,399,848 = 1,399,848/x
3. Step 3: Cross multiply
   644,556x = 1,399,848 × 1,399,848
4. Step 4: Simplify right side
   644,556x = 1,959,574,423,104
5. Step 5: Solve for x
   x = 1,959,574,423,104/644,556
6. Step 6: Final answer
   x = 3,040,192.66