Finding the Third Proportional to 1,128,824 and 1,729,200

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,824 : 1,729,200 = 1,729,200 : x
2. Step 2: Convert to fraction form
   1,128,824/1,729,200 = 1,729,200/x
3. Step 3: Cross multiply
   1,128,824x = 1,729,200 × 1,729,200
4. Step 4: Simplify right side
   1,128,824x = 2,990,132,640,000
5. Step 5: Solve for x
   x = 2,990,132,640,000/1,128,824
6. Step 6: Final answer
   x = 2,648,891.80