Finding the Third Proportional to 286,713 and 455,413.50

Step by Step Solution

1. Step 1: Write the proportion equation
   286,713 : 455,413.50 = 455,413.50 : x
2. Step 2: Convert to fraction form
   286,713/455,413.50 = 455,413.50/x
3. Step 3: Cross multiply
   286,713x = 455,413.50 × 455,413.50
4. Step 4: Simplify right side
   286,713x = 207,401,455,982.25
5. Step 5: Solve for x
   x = 207,401,455,982.25/286,713
6. Step 6: Final answer
   x = 723,376.53