Finding the Third Proportional to 178,268 and 388,522

Step by Step Solution

1. Step 1: Write the proportion equation
   178,268 : 388,522 = 388,522 : x
2. Step 2: Convert to fraction form
   178,268/388,522 = 388,522/x
3. Step 3: Cross multiply
   178,268x = 388,522 × 388,522
4. Step 4: Simplify right side
   178,268x = 150,949,344,484
5. Step 5: Solve for x
   x = 150,949,344,484/178,268
6. Step 6: Final answer
   x = 846,755.14