Finding the Third Proportional to 838,400 and 1,818,578

Step by Step Solution

1. Step 1: Write the proportion equation
   838,400 : 1,818,578 = 1,818,578 : x
2. Step 2: Convert to fraction form
   838,400/1,818,578 = 1,818,578/x
3. Step 3: Cross multiply
   838,400x = 1,818,578 × 1,818,578
4. Step 4: Simplify right side
   838,400x = 3,307,225,942,084
5. Step 5: Solve for x
   x = 3,307,225,942,084/838,400
6. Step 6: Final answer
   x = 3,944,687.43