Finding the Third Proportional to 118,954 and 280,707.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,954 : 280,707.50 = 280,707.50 : x
2. Step 2: Convert to fraction form
   118,954/280,707.50 = 280,707.50/x
3. Step 3: Cross multiply
   118,954x = 280,707.50 × 280,707.50
4. Step 4: Simplify right side
   118,954x = 78,796,700,556.25
5. Step 5: Solve for x
   x = 78,796,700,556.25/118,954
6. Step 6: Final answer
   x = 662,413.21