Finding the Third Proportional to 131,657.50 and 188,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,657.50 : 188,139.50 = 188,139.50 : x
2. Step 2: Convert to fraction form
   131,657.50/188,139.50 = 188,139.50/x
3. Step 3: Cross multiply
   131,657.50x = 188,139.50 × 188,139.50
4. Step 4: Simplify right side
   131,657.50x = 35,396,471,460.25
5. Step 5: Solve for x
   x = 35,396,471,460.25/131,657.50
6. Step 6: Final answer
   x = 268,852.68