Finding the Third Proportional to 187,992 and 391,474.50

Step by Step Solution

1. Step 1: Write the proportion equation
   187,992 : 391,474.50 = 391,474.50 : x
2. Step 2: Convert to fraction form
   187,992/391,474.50 = 391,474.50/x
3. Step 3: Cross multiply
   187,992x = 391,474.50 × 391,474.50
4. Step 4: Simplify right side
   187,992x = 153,252,284,150.25
5. Step 5: Solve for x
   x = 153,252,284,150.25/187,992
6. Step 6: Final answer
   x = 815,206.41