Finding the Third Proportional to 90,728 and 181,820

Step by Step Solution

1. Step 1: Write the proportion equation
   90,728 : 181,820 = 181,820 : x
2. Step 2: Convert to fraction form
   90,728/181,820 = 181,820/x
3. Step 3: Cross multiply
   90,728x = 181,820 × 181,820
4. Step 4: Simplify right side
   90,728x = 33,058,512,400
5. Step 5: Solve for x
   x = 33,058,512,400/90,728
6. Step 6: Final answer
   x = 364,369.46