Finding the Third Proportional to 613,490 and 1,256,726

Step by Step Solution

1. Step 1: Write the proportion equation
   613,490 : 1,256,726 = 1,256,726 : x
2. Step 2: Convert to fraction form
   613,490/1,256,726 = 1,256,726/x
3. Step 3: Cross multiply
   613,490x = 1,256,726 × 1,256,726
4. Step 4: Simplify right side
   613,490x = 1,579,360,239,076
5. Step 5: Solve for x
   x = 1,579,360,239,076/613,490
6. Step 6: Final answer
   x = 2,574,386.28