Finding the Third Proportional to 19,121.25 and 42,065.25

Step by Step Solution

1. Step 1: Write the proportion equation
   19,121.25 : 42,065.25 = 42,065.25 : x
2. Step 2: Convert to fraction form
   19,121.25/42,065.25 = 42,065.25/x
3. Step 3: Cross multiply
   19,121.25x = 42,065.25 × 42,065.25
4. Step 4: Simplify right side
   19,121.25x = 1,769,485,257.56
5. Step 5: Solve for x
   x = 1,769,485,257.56/19,121.25
6. Step 6: Final answer
   x = 92,540.25