Finding the Third Proportional to 12,861.50 and 28,185

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861.50 : 28,185 = 28,185 : x
2. Step 2: Convert to fraction form
   12,861.50/28,185 = 28,185/x
3. Step 3: Cross multiply
   12,861.50x = 28,185 × 28,185
4. Step 4: Simplify right side
   12,861.50x = 794,394,225
5. Step 5: Solve for x
   x = 794,394,225/12,861.50
6. Step 6: Final answer
   x = 61,765.29