Finding the Third Proportional to 728,678 and 1,018,970

Step by Step Solution

1. Step 1: Write the proportion equation
   728,678 : 1,018,970 = 1,018,970 : x
2. Step 2: Convert to fraction form
   728,678/1,018,970 = 1,018,970/x
3. Step 3: Cross multiply
   728,678x = 1,018,970 × 1,018,970
4. Step 4: Simplify right side
   728,678x = 1,038,299,860,900
5. Step 5: Solve for x
   x = 1,038,299,860,900/728,678
6. Step 6: Final answer
   x = 1,424,909.03