Finding the Third Proportional to 90,608 and 139,952

Step by Step Solution

1. Step 1: Write the proportion equation
   90,608 : 139,952 = 139,952 : x
2. Step 2: Convert to fraction form
   90,608/139,952 = 139,952/x
3. Step 3: Cross multiply
   90,608x = 139,952 × 139,952
4. Step 4: Simplify right side
   90,608x = 19,586,562,304
5. Step 5: Solve for x
   x = 19,586,562,304/90,608
6. Step 6: Final answer
   x = 216,168.13