Finding the Third Proportional to 13,287 and 28,495.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,287 : 28,495.50 = 28,495.50 : x
2. Step 2: Convert to fraction form
   13,287/28,495.50 = 28,495.50/x
3. Step 3: Cross multiply
   13,287x = 28,495.50 × 28,495.50
4. Step 4: Simplify right side
   13,287x = 811,993,520.25
5. Step 5: Solve for x
   x = 811,993,520.25/13,287
6. Step 6: Final answer
   x = 61,111.88