Finding the Third Proportional to 18,355.78 and 28,615.78

Step by Step Solution

1. Step 1: Write the proportion equation
   18,355.78 : 28,615.78 = 28,615.78 : x
2. Step 2: Convert to fraction form
   18,355.78/28,615.78 = 28,615.78/x
3. Step 3: Cross multiply
   18,355.78x = 28,615.78 × 28,615.78
4. Step 4: Simplify right side
   18,355.78x = 818,862,936.55
5. Step 5: Solve for x
   x = 818,862,936.55/18,355.78
6. Step 6: Final answer
   x = 44,610.63