Finding the Third Proportional to 87,813 and 188,939.25

Step by Step Solution

1. Step 1: Write the proportion equation
   87,813 : 188,939.25 = 188,939.25 : x
2. Step 2: Convert to fraction form
   87,813/188,939.25 = 188,939.25/x
3. Step 3: Cross multiply
   87,813x = 188,939.25 × 188,939.25
4. Step 4: Simplify right side
   87,813x = 35,698,040,190.56
5. Step 5: Solve for x
   x = 35,698,040,190.56/87,813
6. Step 6: Final answer
   x = 406,523.41