Finding the Third Proportional to 1,128,816 and 1,729,188

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,816 : 1,729,188 = 1,729,188 : x
2. Step 2: Convert to fraction form
   1,128,816/1,729,188 = 1,729,188/x
3. Step 3: Cross multiply
   1,128,816x = 1,729,188 × 1,729,188
4. Step 4: Simplify right side
   1,128,816x = 2,990,091,139,344
5. Step 5: Solve for x
   x = 2,990,091,139,344/1,128,816
6. Step 6: Final answer
   x = 2,648,873.81