Finding the Third Proportional to 109,498.50 and 143,781.75

Step by Step Solution

1. Step 1: Write the proportion equation
   109,498.50 : 143,781.75 = 143,781.75 : x
2. Step 2: Convert to fraction form
   109,498.50/143,781.75 = 143,781.75/x
3. Step 3: Cross multiply
   109,498.50x = 143,781.75 × 143,781.75
4. Step 4: Simplify right side
   109,498.50x = 20,673,191,633.06
5. Step 5: Solve for x
   x = 20,673,191,633.06/109,498.50
6. Step 6: Final answer
   x = 188,798.86