Finding the Third Proportional to 12,986 and 28,401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,986 : 28,401.50 = 28,401.50 : x
2. Step 2: Convert to fraction form
   12,986/28,401.50 = 28,401.50/x
3. Step 3: Cross multiply
   12,986x = 28,401.50 × 28,401.50
4. Step 4: Simplify right side
   12,986x = 806,645,202.25
5. Step 5: Solve for x
   x = 806,645,202.25/12,986
6. Step 6: Final answer
   x = 62,116.53