Finding the Third Proportional to 42,320 and 91,021

Step by Step Solution

1. Step 1: Write the proportion equation
   42,320 : 91,021 = 91,021 : x
2. Step 2: Convert to fraction form
   42,320/91,021 = 91,021/x
3. Step 3: Cross multiply
   42,320x = 91,021 × 91,021
4. Step 4: Simplify right side
   42,320x = 8,284,822,441
5. Step 5: Solve for x
   x = 8,284,822,441/42,320
6. Step 6: Final answer
   x = 195,766.13