Finding the Third Proportional to 976,590 and 2,139,372

Step by Step Solution

1. Step 1: Write the proportion equation
   976,590 : 2,139,372 = 2,139,372 : x
2. Step 2: Convert to fraction form
   976,590/2,139,372 = 2,139,372/x
3. Step 3: Cross multiply
   976,590x = 2,139,372 × 2,139,372
4. Step 4: Simplify right side
   976,590x = 4,576,912,554,384
5. Step 5: Solve for x
   x = 4,576,912,554,384/976,590
6. Step 6: Final answer
   x = 4,686,626.48