Finding the Third Proportional to 384,366 and 818,622

Step by Step Solution

1. Step 1: Write the proportion equation
   384,366 : 818,622 = 818,622 : x
2. Step 2: Convert to fraction form
   384,366/818,622 = 818,622/x
3. Step 3: Cross multiply
   384,366x = 818,622 × 818,622
4. Step 4: Simplify right side
   384,366x = 670,141,978,884
5. Step 5: Solve for x
   x = 670,141,978,884/384,366
6. Step 6: Final answer
   x = 1,743,499.63