Finding the Third Proportional to 155,413.69 and 287,150.06

Step by Step Solution

1. Step 1: Write the proportion equation
   155,413.69 : 287,150.06 = 287,150.06 : x
2. Step 2: Convert to fraction form
   155,413.69/287,150.06 = 287,150.06/x
3. Step 3: Cross multiply
   155,413.69x = 287,150.06 × 287,150.06
4. Step 4: Simplify right side
   155,413.69x = 82,455,158,393.75
5. Step 5: Solve for x
   x = 82,455,158,393.75/155,413.69
6. Step 6: Final answer
   x = 530,552.74