Finding the Third Proportional to 728,648 and 1,018,930

Step by Step Solution

1. Step 1: Write the proportion equation
   728,648 : 1,018,930 = 1,018,930 : x
2. Step 2: Convert to fraction form
   728,648/1,018,930 = 1,018,930/x
3. Step 3: Cross multiply
   728,648x = 1,018,930 × 1,018,930
4. Step 4: Simplify right side
   728,648x = 1,038,218,344,900
5. Step 5: Solve for x
   x = 1,038,218,344,900/728,648
6. Step 6: Final answer
   x = 1,424,855.82