Finding the Third Proportional to 60,786.50 and 126,405

Step by Step Solution

1. Step 1: Write the proportion equation
   60,786.50 : 126,405 = 126,405 : x
2. Step 2: Convert to fraction form
   60,786.50/126,405 = 126,405/x
3. Step 3: Cross multiply
   60,786.50x = 126,405 × 126,405
4. Step 4: Simplify right side
   60,786.50x = 15,978,224,025
5. Step 5: Solve for x
   x = 15,978,224,025/60,786.50
6. Step 6: Final answer
   x = 262,858.10