Finding the Third Proportional to 90,784 and 199,484

Step by Step Solution

1. Step 1: Write the proportion equation
   90,784 : 199,484 = 199,484 : x
2. Step 2: Convert to fraction form
   90,784/199,484 = 199,484/x
3. Step 3: Cross multiply
   90,784x = 199,484 × 199,484
4. Step 4: Simplify right side
   90,784x = 39,793,866,256
5. Step 5: Solve for x
   x = 39,793,866,256/90,784
6. Step 6: Final answer
   x = 438,335.68