Finding the Third Proportional to 598,128 and 1,279,200

Step by Step Solution

1. Step 1: Write the proportion equation
   598,128 : 1,279,200 = 1,279,200 : x
2. Step 2: Convert to fraction form
   598,128/1,279,200 = 1,279,200/x
3. Step 3: Cross multiply
   598,128x = 1,279,200 × 1,279,200
4. Step 4: Simplify right side
   598,128x = 1,636,352,640,000
5. Step 5: Solve for x
   x = 1,636,352,640,000/598,128
6. Step 6: Final answer
   x = 2,735,790.07