Finding the Third Proportional to 728,678 and 1,018,968

Step by Step Solution

1. Step 1: Write the proportion equation
   728,678 : 1,018,968 = 1,018,968 : x
2. Step 2: Convert to fraction form
   728,678/1,018,968 = 1,018,968/x
3. Step 3: Cross multiply
   728,678x = 1,018,968 × 1,018,968
4. Step 4: Simplify right side
   728,678x = 1,038,295,785,024
5. Step 5: Solve for x
   x = 1,038,295,785,024/728,678
6. Step 6: Final answer
   x = 1,424,903.43