Finding the Third Proportional to 65,990.50 and 106,249

Step by Step Solution

1. Step 1: Write the proportion equation
   65,990.50 : 106,249 = 106,249 : x
2. Step 2: Convert to fraction form
   65,990.50/106,249 = 106,249/x
3. Step 3: Cross multiply
   65,990.50x = 106,249 × 106,249
4. Step 4: Simplify right side
   65,990.50x = 11,288,850,001
5. Step 5: Solve for x
   x = 11,288,850,001/65,990.50
6. Step 6: Final answer
   x = 171,067.81