Finding the Third Proportional to 155,384 and 339,928

Step by Step Solution

1. Step 1: Write the proportion equation
   155,384 : 339,928 = 339,928 : x
2. Step 2: Convert to fraction form
   155,384/339,928 = 339,928/x
3. Step 3: Cross multiply
   155,384x = 339,928 × 339,928
4. Step 4: Simplify right side
   155,384x = 115,551,045,184
5. Step 5: Solve for x
   x = 115,551,045,184/155,384
6. Step 6: Final answer
   x = 743,648.29