Finding the Third Proportional to 55,282.50 and 121,986

Step by Step Solution

1. Step 1: Write the proportion equation
   55,282.50 : 121,986 = 121,986 : x
2. Step 2: Convert to fraction form
   55,282.50/121,986 = 121,986/x
3. Step 3: Cross multiply
   55,282.50x = 121,986 × 121,986
4. Step 4: Simplify right side
   55,282.50x = 14,880,584,196
5. Step 5: Solve for x
   x = 14,880,584,196/55,282.50
6. Step 6: Final answer
   x = 269,173.50