Finding the Third Proportional to 142,389 and 207,960.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,389 : 207,960.50 = 207,960.50 : x
2. Step 2: Convert to fraction form
   142,389/207,960.50 = 207,960.50/x
3. Step 3: Cross multiply
   142,389x = 207,960.50 × 207,960.50
4. Step 4: Simplify right side
   142,389x = 43,247,569,560.25
5. Step 5: Solve for x
   x = 43,247,569,560.25/142,389
6. Step 6: Final answer
   x = 303,728.30