Finding the Third Proportional to 173,155.50 and 259,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   173,155.50 : 259,042.50 = 259,042.50 : x
2. Step 2: Convert to fraction form
   173,155.50/259,042.50 = 259,042.50/x
3. Step 3: Cross multiply
   173,155.50x = 259,042.50 × 259,042.50
4. Step 4: Simplify right side
   173,155.50x = 67,103,016,806.25
5. Step 5: Solve for x
   x = 67,103,016,806.25/173,155.50
6. Step 6: Final answer
   x = 387,530.38