Finding the Third Proportional to 984,378 and 1,407,636

Step by Step Solution

1. Step 1: Write the proportion equation
   984,378 : 1,407,636 = 1,407,636 : x
2. Step 2: Convert to fraction form
   984,378/1,407,636 = 1,407,636/x
3. Step 3: Cross multiply
   984,378x = 1,407,636 × 1,407,636
4. Step 4: Simplify right side
   984,378x = 1,981,439,108,496
5. Step 5: Solve for x
   x = 1,981,439,108,496/984,378
6. Step 6: Final answer
   x = 2,012,884.39