Finding the Third Proportional to 170,074.50 and 372,405

Step by Step Solution

1. Step 1: Write the proportion equation
   170,074.50 : 372,405 = 372,405 : x
2. Step 2: Convert to fraction form
   170,074.50/372,405 = 372,405/x
3. Step 3: Cross multiply
   170,074.50x = 372,405 × 372,405
4. Step 4: Simplify right side
   170,074.50x = 138,685,484,025
5. Step 5: Solve for x
   x = 138,685,484,025/170,074.50
6. Step 6: Final answer
   x = 815,439.61