Finding the Third Proportional to 13,615.50 and 20,627.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,615.50 : 20,627.25 = 20,627.25 : x
2. Step 2: Convert to fraction form
   13,615.50/20,627.25 = 20,627.25/x
3. Step 3: Cross multiply
   13,615.50x = 20,627.25 × 20,627.25
4. Step 4: Simplify right side
   13,615.50x = 425,483,442.56
5. Step 5: Solve for x
   x = 425,483,442.56/13,615.50
6. Step 6: Final answer
   x = 31,249.93