Finding the Third Proportional to 603,664 and 1,256,936

Step by Step Solution

1. Step 1: Write the proportion equation
   603,664 : 1,256,936 = 1,256,936 : x
2. Step 2: Convert to fraction form
   603,664/1,256,936 = 1,256,936/x
3. Step 3: Cross multiply
   603,664x = 1,256,936 × 1,256,936
4. Step 4: Simplify right side
   603,664x = 1,579,888,108,096
5. Step 5: Solve for x
   x = 1,579,888,108,096/603,664
6. Step 6: Final answer
   x = 2,617,164.69