Finding the Third Proportional to 19,398 and 42,073.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,398 : 42,073.50 = 42,073.50 : x
2. Step 2: Convert to fraction form
   19,398/42,073.50 = 42,073.50/x
3. Step 3: Cross multiply
   19,398x = 42,073.50 × 42,073.50
4. Step 4: Simplify right side
   19,398x = 1,770,179,402.25
5. Step 5: Solve for x
   x = 1,770,179,402.25/19,398
6. Step 6: Final answer
   x = 91,255.77