Finding the Third Proportional to 154,849 and 339,222

Step by Step Solution

1. Step 1: Write the proportion equation
   154,849 : 339,222 = 339,222 : x
2. Step 2: Convert to fraction form
   154,849/339,222 = 339,222/x
3. Step 3: Cross multiply
   154,849x = 339,222 × 339,222
4. Step 4: Simplify right side
   154,849x = 115,071,565,284
5. Step 5: Solve for x
   x = 115,071,565,284/154,849
6. Step 6: Final answer
   x = 743,121.14