Finding the Third Proportional to 90,820 and 199,048

Step by Step Solution

1. Step 1: Write the proportion equation
   90,820 : 199,048 = 199,048 : x
2. Step 2: Convert to fraction form
   90,820/199,048 = 199,048/x
3. Step 3: Cross multiply
   90,820x = 199,048 × 199,048
4. Step 4: Simplify right side
   90,820x = 39,620,106,304
5. Step 5: Solve for x
   x = 39,620,106,304/90,820
6. Step 6: Final answer
   x = 436,248.69