Finding the Third Proportional to 42,936 and 68,363.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,936 : 68,363.50 = 68,363.50 : x
2. Step 2: Convert to fraction form
   42,936/68,363.50 = 68,363.50/x
3. Step 3: Cross multiply
   42,936x = 68,363.50 × 68,363.50
4. Step 4: Simplify right side
   42,936x = 4,673,568,132.25
5. Step 5: Solve for x
   x = 4,673,568,132.25/42,936
6. Step 6: Final answer
   x = 108,849.64