Finding the Third Proportional to 133,860 and 196,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,860 : 196,321.50 = 196,321.50 : x
2. Step 2: Convert to fraction form
   133,860/196,321.50 = 196,321.50/x
3. Step 3: Cross multiply
   133,860x = 196,321.50 × 196,321.50
4. Step 4: Simplify right side
   133,860x = 38,542,131,362.25
5. Step 5: Solve for x
   x = 38,542,131,362.25/133,860
6. Step 6: Final answer
   x = 287,928.67