Finding the Third Proportional to 85,243.50 and 187,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,243.50 : 187,105.50 = 187,105.50 : x
2. Step 2: Convert to fraction form
   85,243.50/187,105.50 = 187,105.50/x
3. Step 3: Cross multiply
   85,243.50x = 187,105.50 × 187,105.50
4. Step 4: Simplify right side
   85,243.50x = 35,008,468,130.25
5. Step 5: Solve for x
   x = 35,008,468,130.25/85,243.50
6. Step 6: Final answer
   x = 410,687.83