Finding the Third Proportional to 196,788 and 311,116

Step by Step Solution

1. Step 1: Write the proportion equation
   196,788 : 311,116 = 311,116 : x
2. Step 2: Convert to fraction form
   196,788/311,116 = 311,116/x
3. Step 3: Cross multiply
   196,788x = 311,116 × 311,116
4. Step 4: Simplify right side
   196,788x = 96,793,165,456
5. Step 5: Solve for x
   x = 96,793,165,456/196,788
6. Step 6: Final answer
   x = 491,865.18