Finding the Third Proportional to 55,216.50 and 120,099

Step by Step Solution

1. Step 1: Write the proportion equation
   55,216.50 : 120,099 = 120,099 : x
2. Step 2: Convert to fraction form
   55,216.50/120,099 = 120,099/x
3. Step 3: Cross multiply
   55,216.50x = 120,099 × 120,099
4. Step 4: Simplify right side
   55,216.50x = 14,423,769,801
5. Step 5: Solve for x
   x = 14,423,769,801/55,216.50
6. Step 6: Final answer
   x = 261,222.09