Finding the Third Proportional to 19,659.38 and 42,447.38

Step by Step Solution

1. Step 1: Write the proportion equation
   19,659.38 : 42,447.38 = 42,447.38 : x
2. Step 2: Convert to fraction form
   19,659.38/42,447.38 = 42,447.38/x
3. Step 3: Cross multiply
   19,659.38x = 42,447.38 × 42,447.38
4. Step 4: Simplify right side
   19,659.38x = 1,801,779,644.39
5. Step 5: Solve for x
   x = 1,801,779,644.39/19,659.38
6. Step 6: Final answer
   x = 91,649.89