Finding the Third Proportional to 613,470 and 1,256,688

Step by Step Solution

1. Step 1: Write the proportion equation
   613,470 : 1,256,688 = 1,256,688 : x
2. Step 2: Convert to fraction form
   613,470/1,256,688 = 1,256,688/x
3. Step 3: Cross multiply
   613,470x = 1,256,688 × 1,256,688
4. Step 4: Simplify right side
   613,470x = 1,579,264,729,344
5. Step 5: Solve for x
   x = 1,579,264,729,344/613,470
6. Step 6: Final answer
   x = 2,574,314.52