Finding the Third Proportional to 9,211.29 and 19,736.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,211.29 : 19,736.86 = 19,736.86 : x
2. Step 2: Convert to fraction form
   9,211.29/19,736.86 = 19,736.86/x
3. Step 3: Cross multiply
   9,211.29x = 19,736.86 × 19,736.86
4. Step 4: Simplify right side
   9,211.29x = 389,543,617.99
5. Step 5: Solve for x
   x = 389,543,617.99/9,211.29
6. Step 6: Final answer
   x = 42,289.80