Finding the Third Proportional to 142,934 and 209,028

Step by Step Solution

1. Step 1: Write the proportion equation
   142,934 : 209,028 = 209,028 : x
2. Step 2: Convert to fraction form
   142,934/209,028 = 209,028/x
3. Step 3: Cross multiply
   142,934x = 209,028 × 209,028
4. Step 4: Simplify right side
   142,934x = 43,692,704,784
5. Step 5: Solve for x
   x = 43,692,704,784/142,934
6. Step 6: Final answer
   x = 305,684.48