Finding the Third Proportional to 55,711.50 and 121,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,711.50 : 121,630.50 = 121,630.50 : x
2. Step 2: Convert to fraction form
   55,711.50/121,630.50 = 121,630.50/x
3. Step 3: Cross multiply
   55,711.50x = 121,630.50 × 121,630.50
4. Step 4: Simplify right side
   55,711.50x = 14,793,978,530.25
5. Step 5: Solve for x
   x = 14,793,978,530.25/55,711.50
6. Step 6: Final answer
   x = 265,546.23