Finding the Third Proportional to 155,422.50 and 240,718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,422.50 : 240,718.50 = 240,718.50 : x
2. Step 2: Convert to fraction form
   155,422.50/240,718.50 = 240,718.50/x
3. Step 3: Cross multiply
   155,422.50x = 240,718.50 × 240,718.50
4. Step 4: Simplify right side
   155,422.50x = 57,945,396,242.25
5. Step 5: Solve for x
   x = 57,945,396,242.25/155,422.50
6. Step 6: Final answer
   x = 372,825.02