Finding the Third Proportional to 644,112 and 1,399,032

Step by Step Solution

1. Step 1: Write the proportion equation
   644,112 : 1,399,032 = 1,399,032 : x
2. Step 2: Convert to fraction form
   644,112/1,399,032 = 1,399,032/x
3. Step 3: Cross multiply
   644,112x = 1,399,032 × 1,399,032
4. Step 4: Simplify right side
   644,112x = 1,957,290,537,024
5. Step 5: Solve for x
   x = 1,957,290,537,024/644,112
6. Step 6: Final answer
   x = 3,038,742.54