Finding the Third Proportional to 55,255.50 and 120,630

Step by Step Solution

1. Step 1: Write the proportion equation
   55,255.50 : 120,630 = 120,630 : x
2. Step 2: Convert to fraction form
   55,255.50/120,630 = 120,630/x
3. Step 3: Cross multiply
   55,255.50x = 120,630 × 120,630
4. Step 4: Simplify right side
   55,255.50x = 14,551,596,900
5. Step 5: Solve for x
   x = 14,551,596,900/55,255.50
6. Step 6: Final answer
   x = 263,351.10