Finding the Third Proportional to 840,608 and 1,257,936

Step by Step Solution

1. Step 1: Write the proportion equation
   840,608 : 1,257,936 = 1,257,936 : x
2. Step 2: Convert to fraction form
   840,608/1,257,936 = 1,257,936/x
3. Step 3: Cross multiply
   840,608x = 1,257,936 × 1,257,936
4. Step 4: Simplify right side
   840,608x = 1,582,402,980,096
5. Step 5: Solve for x
   x = 1,582,402,980,096/840,608
6. Step 6: Final answer
   x = 1,882,450.54