Finding the Third Proportional to 85,231.50 and 130,443

Step by Step Solution

1. Step 1: Write the proportion equation
   85,231.50 : 130,443 = 130,443 : x
2. Step 2: Convert to fraction form
   85,231.50/130,443 = 130,443/x
3. Step 3: Cross multiply
   85,231.50x = 130,443 × 130,443
4. Step 4: Simplify right side
   85,231.50x = 17,015,376,249
5. Step 5: Solve for x
   x = 17,015,376,249/85,231.50
6. Step 6: Final answer
   x = 199,637.18