Finding the Third Proportional to 19,692 and 42,543

Step by Step Solution

1. Step 1: Write the proportion equation
   19,692 : 42,543 = 42,543 : x
2. Step 2: Convert to fraction form
   19,692/42,543 = 42,543/x
3. Step 3: Cross multiply
   19,692x = 42,543 × 42,543
4. Step 4: Simplify right side
   19,692x = 1,809,906,849
5. Step 5: Solve for x
   x = 1,809,906,849/19,692
6. Step 6: Final answer
   x = 91,910.77