Finding the Third Proportional to 90,453 and 190,939.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,453 : 190,939.50 = 190,939.50 : x
2. Step 2: Convert to fraction form
   90,453/190,939.50 = 190,939.50/x
3. Step 3: Cross multiply
   90,453x = 190,939.50 × 190,939.50
4. Step 4: Simplify right side
   90,453x = 36,457,892,660.25
5. Step 5: Solve for x
   x = 36,457,892,660.25/90,453
6. Step 6: Final answer
   x = 403,058.97