Finding the Third Proportional to 196,780.50 and 311,103

Step by Step Solution

1. Step 1: Write the proportion equation
   196,780.50 : 311,103 = 311,103 : x
2. Step 2: Convert to fraction form
   196,780.50/311,103 = 311,103/x
3. Step 3: Cross multiply
   196,780.50x = 311,103 × 311,103
4. Step 4: Simplify right side
   196,780.50x = 96,785,076,609
5. Step 5: Solve for x
   x = 96,785,076,609/196,780.50
6. Step 6: Final answer
   x = 491,842.82