Finding the Third Proportional to 142,959 and 209,662

Step by Step Solution

1. Step 1: Write the proportion equation
   142,959 : 209,662 = 209,662 : x
2. Step 2: Convert to fraction form
   142,959/209,662 = 209,662/x
3. Step 3: Cross multiply
   142,959x = 209,662 × 209,662
4. Step 4: Simplify right side
   142,959x = 43,958,154,244
5. Step 5: Solve for x
   x = 43,958,154,244/142,959
6. Step 6: Final answer
   x = 307,487.84