Finding the Third Proportional to 155,715.75 and 339,573

Step by Step Solution

1. Step 1: Write the proportion equation
   155,715.75 : 339,573 = 339,573 : x
2. Step 2: Convert to fraction form
   155,715.75/339,573 = 339,573/x
3. Step 3: Cross multiply
   155,715.75x = 339,573 × 339,573
4. Step 4: Simplify right side
   155,715.75x = 115,309,822,329
5. Step 5: Solve for x
   x = 115,309,822,329/155,715.75
6. Step 6: Final answer
   x = 740,514.83