Finding the Third Proportional to 155,428.50 and 240,729

Step by Step Solution

1. Step 1: Write the proportion equation
   155,428.50 : 240,729 = 240,729 : x
2. Step 2: Convert to fraction form
   155,428.50/240,729 = 240,729/x
3. Step 3: Cross multiply
   155,428.50x = 240,729 × 240,729
4. Step 4: Simplify right side
   155,428.50x = 57,950,451,441
5. Step 5: Solve for x
   x = 57,950,451,441/155,428.50
6. Step 6: Final answer
   x = 372,843.15