Finding the Third Proportional to 580,911 and 1,258,320

Step by Step Solution

1. Step 1: Write the proportion equation
   580,911 : 1,258,320 = 1,258,320 : x
2. Step 2: Convert to fraction form
   580,911/1,258,320 = 1,258,320/x
3. Step 3: Cross multiply
   580,911x = 1,258,320 × 1,258,320
4. Step 4: Simplify right side
   580,911x = 1,583,369,222,400
5. Step 5: Solve for x
   x = 1,583,369,222,400/580,911
6. Step 6: Final answer
   x = 2,725,665.76