Finding the Third Proportional to 90,986 and 199,453

Step by Step Solution

1. Step 1: Write the proportion equation
   90,986 : 199,453 = 199,453 : x
2. Step 2: Convert to fraction form
   90,986/199,453 = 199,453/x
3. Step 3: Cross multiply
   90,986x = 199,453 × 199,453
4. Step 4: Simplify right side
   90,986x = 39,781,499,209
5. Step 5: Solve for x
   x = 39,781,499,209/90,986
6. Step 6: Final answer
   x = 437,226.60