Finding the Third Proportional to 91,868 and 196,857

Step by Step Solution

1. Step 1: Write the proportion equation
   91,868 : 196,857 = 196,857 : x
2. Step 2: Convert to fraction form
   91,868/196,857 = 196,857/x
3. Step 3: Cross multiply
   91,868x = 196,857 × 196,857
4. Step 4: Simplify right side
   91,868x = 38,752,678,449
5. Step 5: Solve for x
   x = 38,752,678,449/91,868
6. Step 6: Final answer
   x = 421,830.00