Finding the Third Proportional to 91,166 and 196,912

Step by Step Solution

1. Step 1: Write the proportion equation
   91,166 : 196,912 = 196,912 : x
2. Step 2: Convert to fraction form
   91,166/196,912 = 196,912/x
3. Step 3: Cross multiply
   91,166x = 196,912 × 196,912
4. Step 4: Simplify right side
   91,166x = 38,774,335,744
5. Step 5: Solve for x
   x = 38,774,335,744/91,166
6. Step 6: Final answer
   x = 425,315.75