Finding the Third Proportional to 42,215.50 and 91,436

Step by Step Solution

1. Step 1: Write the proportion equation
   42,215.50 : 91,436 = 91,436 : x
2. Step 2: Convert to fraction form
   42,215.50/91,436 = 91,436/x
3. Step 3: Cross multiply
   42,215.50x = 91,436 × 91,436
4. Step 4: Simplify right side
   42,215.50x = 8,360,542,096
5. Step 5: Solve for x
   x = 8,360,542,096/42,215.50
6. Step 6: Final answer
   x = 198,044.37