Finding the Third Proportional to 101,991.50 and 143,371.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,991.50 : 143,371.50 = 143,371.50 : x
2. Step 2: Convert to fraction form
   101,991.50/143,371.50 = 143,371.50/x
3. Step 3: Cross multiply
   101,991.50x = 143,371.50 × 143,371.50
4. Step 4: Simplify right side
   101,991.50x = 20,555,387,012.25
5. Step 5: Solve for x
   x = 20,555,387,012.25/101,991.50
6. Step 6: Final answer
   x = 201,540.20