Finding the Third Proportional to 19,627.31 and 42,231.38

Step by Step Solution

1. Step 1: Write the proportion equation
   19,627.31 : 42,231.38 = 42,231.38 : x
2. Step 2: Convert to fraction form
   19,627.31/42,231.38 = 42,231.38/x
3. Step 3: Cross multiply
   19,627.31x = 42,231.38 × 42,231.38
4. Step 4: Simplify right side
   19,627.31x = 1,783,489,034.39
5. Step 5: Solve for x
   x = 1,783,489,034.39/19,627.31
6. Step 6: Final answer
   x = 90,867.71