Finding the Third Proportional to 155,717 and 240,581.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,717 : 240,581.50 = 240,581.50 : x
2. Step 2: Convert to fraction form
   155,717/240,581.50 = 240,581.50/x
3. Step 3: Cross multiply
   155,717x = 240,581.50 × 240,581.50
4. Step 4: Simplify right side
   155,717x = 57,879,458,142.25
5. Step 5: Solve for x
   x = 57,879,458,142.25/155,717
6. Step 6: Final answer
   x = 371,696.46