Finding the Third Proportional to 241,772 and 339,870

Step by Step Solution

1. Step 1: Write the proportion equation
   241,772 : 339,870 = 339,870 : x
2. Step 2: Convert to fraction form
   241,772/339,870 = 339,870/x
3. Step 3: Cross multiply
   241,772x = 339,870 × 339,870
4. Step 4: Simplify right side
   241,772x = 115,511,616,900
5. Step 5: Solve for x
   x = 115,511,616,900/241,772
6. Step 6: Final answer
   x = 477,770.86