Finding the Third Proportional to 155,509.50 and 240,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,509.50 : 240,136.50 = 240,136.50 : x
2. Step 2: Convert to fraction form
   155,509.50/240,136.50 = 240,136.50/x
3. Step 3: Cross multiply
   155,509.50x = 240,136.50 × 240,136.50
4. Step 4: Simplify right side
   155,509.50x = 57,665,538,632.25
5. Step 5: Solve for x
   x = 57,665,538,632.25/155,509.50
6. Step 6: Final answer
   x = 370,816.82