Finding the Third Proportional to 63,211.50 and 135,171

Step by Step Solution

1. Step 1: Write the proportion equation
   63,211.50 : 135,171 = 135,171 : x
2. Step 2: Convert to fraction form
   63,211.50/135,171 = 135,171/x
3. Step 3: Cross multiply
   63,211.50x = 135,171 × 135,171
4. Step 4: Simplify right side
   63,211.50x = 18,271,199,241
5. Step 5: Solve for x
   x = 18,271,199,241/63,211.50
6. Step 6: Final answer
   x = 289,048.66