Finding the Third Proportional to 598,706 and 1,280,428

Step by Step Solution

1. Step 1: Write the proportion equation
   598,706 : 1,280,428 = 1,280,428 : x
2. Step 2: Convert to fraction form
   598,706/1,280,428 = 1,280,428/x
3. Step 3: Cross multiply
   598,706x = 1,280,428 × 1,280,428
4. Step 4: Simplify right side
   598,706x = 1,639,495,863,184
5. Step 5: Solve for x
   x = 1,639,495,863,184/598,706
6. Step 6: Final answer
   x = 2,738,398.92