Finding the Third Proportional to 91,165 and 196,910

Step by Step Solution

1. Step 1: Write the proportion equation
   91,165 : 196,910 = 196,910 : x
2. Step 2: Convert to fraction form
   91,165/196,910 = 196,910/x
3. Step 3: Cross multiply
   91,165x = 196,910 × 196,910
4. Step 4: Simplify right side
   91,165x = 38,773,548,100
5. Step 5: Solve for x
   x = 38,773,548,100/91,165
6. Step 6: Final answer
   x = 425,311.78