Finding the Third Proportional to 89,981 and 196,912

Step by Step Solution

1. Step 1: Write the proportion equation
   89,981 : 196,912 = 196,912 : x
2. Step 2: Convert to fraction form
   89,981/196,912 = 196,912/x
3. Step 3: Cross multiply
   89,981x = 196,912 × 196,912
4. Step 4: Simplify right side
   89,981x = 38,774,335,744
5. Step 5: Solve for x
   x = 38,774,335,744/89,981
6. Step 6: Final answer
   x = 430,916.92