Finding the Third Proportional to 91,203 and 196,980

Step by Step Solution

1. Step 1: Write the proportion equation
   91,203 : 196,980 = 196,980 : x
2. Step 2: Convert to fraction form
   91,203/196,980 = 196,980/x
3. Step 3: Cross multiply
   91,203x = 196,980 × 196,980
4. Step 4: Simplify right side
   91,203x = 38,801,120,400
5. Step 5: Solve for x
   x = 38,801,120,400/91,203
6. Step 6: Final answer
   x = 425,436.89