Finding the Third Proportional to 1,128,818 and 1,729,191

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,818 : 1,729,191 = 1,729,191 : x
2. Step 2: Convert to fraction form
   1,128,818/1,729,191 = 1,729,191/x
3. Step 3: Cross multiply
   1,128,818x = 1,729,191 × 1,729,191
4. Step 4: Simplify right side
   1,128,818x = 2,990,101,514,481
5. Step 5: Solve for x
   x = 2,990,101,514,481/1,128,818
6. Step 6: Final answer
   x = 2,648,878.31