Finding the Third Proportional to 1,139,560 and 2,431,664

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,560 : 2,431,664 = 2,431,664 : x
2. Step 2: Convert to fraction form
   1,139,560/2,431,664 = 2,431,664/x
3. Step 3: Cross multiply
   1,139,560x = 2,431,664 × 2,431,664
4. Step 4: Simplify right side
   1,139,560x = 5,912,989,808,896
5. Step 5: Solve for x
   x = 5,912,989,808,896/1,139,560
6. Step 6: Final answer
   x = 5,188,835.87