Finding the Third Proportional to 19,403.75 and 42,439.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,403.75 : 42,439.75 = 42,439.75 : x
2. Step 2: Convert to fraction form
   19,403.75/42,439.75 = 42,439.75/x
3. Step 3: Cross multiply
   19,403.75x = 42,439.75 × 42,439.75
4. Step 4: Simplify right side
   19,403.75x = 1,801,132,380.06
5. Step 5: Solve for x
   x = 1,801,132,380.06/19,403.75
6. Step 6: Final answer
   x = 92,823.93