Finding the Third Proportional to 31,105.50 and 48,243

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.50 : 48,243 = 48,243 : x
2. Step 2: Convert to fraction form
   31,105.50/48,243 = 48,243/x
3. Step 3: Cross multiply
   31,105.50x = 48,243 × 48,243
4. Step 4: Simplify right side
   31,105.50x = 2,327,387,049
5. Step 5: Solve for x
   x = 2,327,387,049/31,105.50
6. Step 6: Final answer
   x = 74,822.36