Finding the Third Proportional to 18,961.59 and 28,442.39

Step by Step Solution

1. Step 1: Write the proportion equation
   18,961.59 : 28,442.39 = 28,442.39 : x
2. Step 2: Convert to fraction form
   18,961.59/28,442.39 = 28,442.39/x
3. Step 3: Cross multiply
   18,961.59x = 28,442.39 × 28,442.39
4. Step 4: Simplify right side
   18,961.59x = 808,969,584.47
5. Step 5: Solve for x
   x = 808,969,584.47/18,961.59
6. Step 6: Final answer
   x = 42,663.59