Finding the Third Proportional to 42,315 and 90,163.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,315 : 90,163.50 = 90,163.50 : x
2. Step 2: Convert to fraction form
   42,315/90,163.50 = 90,163.50/x
3. Step 3: Cross multiply
   42,315x = 90,163.50 × 90,163.50
4. Step 4: Simplify right side
   42,315x = 8,129,456,732.25
5. Step 5: Solve for x
   x = 8,129,456,732.25/42,315
6. Step 6: Final answer
   x = 192,117.61