Finding the Third Proportional to 91,858.75 and 196,839.25

Step by Step Solution

1. Step 1: Write the proportion equation
   91,858.75 : 196,839.25 = 196,839.25 : x
2. Step 2: Convert to fraction form
   91,858.75/196,839.25 = 196,839.25/x
3. Step 3: Cross multiply
   91,858.75x = 196,839.25 × 196,839.25
4. Step 4: Simplify right side
   91,858.75x = 38,745,690,340.56
5. Step 5: Solve for x
   x = 38,745,690,340.56/91,858.75
6. Step 6: Final answer
   x = 421,796.40