Finding the Third Proportional to 9,156.38 and 13,910.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,156.38 : 13,910.06 = 13,910.06 : x
2. Step 2: Convert to fraction form
   9,156.38/13,910.06 = 13,910.06/x
3. Step 3: Cross multiply
   9,156.38x = 13,910.06 × 13,910.06
4. Step 4: Simplify right side
   9,156.38x = 193,489,838.75
5. Step 5: Solve for x
   x = 193,489,838.75/9,156.38
6. Step 6: Final answer
   x = 21,131.71