Finding the Third Proportional to 91,168 and 196,915

Step by Step Solution

1. Step 1: Write the proportion equation
   91,168 : 196,915 = 196,915 : x
2. Step 2: Convert to fraction form
   91,168/196,915 = 196,915/x
3. Step 3: Cross multiply
   91,168x = 196,915 × 196,915
4. Step 4: Simplify right side
   91,168x = 38,775,517,225
5. Step 5: Solve for x
   x = 38,775,517,225/91,168
6. Step 6: Final answer
   x = 425,319.38