Finding the Third Proportional to 642,144 and 1,017,648

Step by Step Solution

1. Step 1: Write the proportion equation
   642,144 : 1,017,648 = 1,017,648 : x
2. Step 2: Convert to fraction form
   642,144/1,017,648 = 1,017,648/x
3. Step 3: Cross multiply
   642,144x = 1,017,648 × 1,017,648
4. Step 4: Simplify right side
   642,144x = 1,035,607,451,904
5. Step 5: Solve for x
   x = 1,035,607,451,904/642,144
6. Step 6: Final answer
   x = 1,612,733.98