Finding the Third Proportional to 90,632 and 139,988

Step by Step Solution

1. Step 1: Write the proportion equation
   90,632 : 139,988 = 139,988 : x
2. Step 2: Convert to fraction form
   90,632/139,988 = 139,988/x
3. Step 3: Cross multiply
   90,632x = 139,988 × 139,988
4. Step 4: Simplify right side
   90,632x = 19,596,640,144
5. Step 5: Solve for x
   x = 19,596,640,144/90,632
6. Step 6: Final answer
   x = 216,222.09