Finding the Third Proportional to 208,156 and 491,218

Step by Step Solution

1. Step 1: Write the proportion equation
   208,156 : 491,218 = 491,218 : x
2. Step 2: Convert to fraction form
   208,156/491,218 = 491,218/x
3. Step 3: Cross multiply
   208,156x = 491,218 × 491,218
4. Step 4: Simplify right side
   208,156x = 241,295,123,524
5. Step 5: Solve for x
   x = 241,295,123,524/208,156
6. Step 6: Final answer
   x = 1,159,203.31