Finding the Third Proportional to 9,367.31 and 19,780.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,367.31 : 19,780.88 = 19,780.88 : x
2. Step 2: Convert to fraction form
   9,367.31/19,780.88 = 19,780.88/x
3. Step 3: Cross multiply
   9,367.31x = 19,780.88 × 19,780.88
4. Step 4: Simplify right side
   9,367.31x = 391,283,015.77
5. Step 5: Solve for x
   x = 391,283,015.77/9,367.31
6. Step 6: Final answer
   x = 41,771.11