Finding the Third Proportional to 866,304 and 1,299,456

Step by Step Solution

1. Step 1: Write the proportion equation
   866,304 : 1,299,456 = 1,299,456 : x
2. Step 2: Convert to fraction form
   866,304/1,299,456 = 1,299,456/x
3. Step 3: Cross multiply
   866,304x = 1,299,456 × 1,299,456
4. Step 4: Simplify right side
   866,304x = 1,688,585,895,936
5. Step 5: Solve for x
   x = 1,688,585,895,936/866,304
6. Step 6: Final answer
   x = 1,949,184