Finding the Third Proportional to 155,608 and 339,380

Step by Step Solution

1. Step 1: Write the proportion equation
   155,608 : 339,380 = 339,380 : x
2. Step 2: Convert to fraction form
   155,608/339,380 = 339,380/x
3. Step 3: Cross multiply
   155,608x = 339,380 × 339,380
4. Step 4: Simplify right side
   155,608x = 115,178,784,400
5. Step 5: Solve for x
   x = 115,178,784,400/155,608
6. Step 6: Final answer
   x = 740,185.49