Finding the Third Proportional to 178,303.50 and 388,593

Step by Step Solution

1. Step 1: Write the proportion equation
   178,303.50 : 388,593 = 388,593 : x
2. Step 2: Convert to fraction form
   178,303.50/388,593 = 388,593/x
3. Step 3: Cross multiply
   178,303.50x = 388,593 × 388,593
4. Step 4: Simplify right side
   178,303.50x = 151,004,519,649
5. Step 5: Solve for x
   x = 151,004,519,649/178,303.50
6. Step 6: Final answer
   x = 846,895.99