Finding the Third Proportional to 91,114.88 and 199,938.38

Step by Step Solution

1. Step 1: Write the proportion equation
   91,114.88 : 199,938.38 = 199,938.38 : x
2. Step 2: Convert to fraction form
   91,114.88/199,938.38 = 199,938.38/x
3. Step 3: Cross multiply
   91,114.88x = 199,938.38 × 199,938.38
4. Step 4: Simplify right side
   91,114.88x = 39,975,353,797.64
5. Step 5: Solve for x
   x = 39,975,353,797.64/91,114.88
6. Step 6: Final answer
   x = 438,735.76