Finding the Third Proportional to 19,115.37 and 31,591.90

Step by Step Solution

1. Step 1: Write the proportion equation
   19,115.37 : 31,591.90 = 31,591.90 : x
2. Step 2: Convert to fraction form
   19,115.37/31,591.90 = 31,591.90/x
3. Step 3: Cross multiply
   19,115.37x = 31,591.90 × 31,591.90
4. Step 4: Simplify right side
   19,115.37x = 998,048,046.89
5. Step 5: Solve for x
   x = 998,048,046.89/19,115.37
6. Step 6: Final answer
   x = 52,211.82