Finding the Third Proportional to 142,949 and 209,648

Step by Step Solution

1. Step 1: Write the proportion equation
   142,949 : 209,648 = 209,648 : x
2. Step 2: Convert to fraction form
   142,949/209,648 = 209,648/x
3. Step 3: Cross multiply
   142,949x = 209,648 × 209,648
4. Step 4: Simplify right side
   142,949x = 43,952,283,904
5. Step 5: Solve for x
   x = 43,952,283,904/142,949
6. Step 6: Final answer
   x = 307,468.29