Finding the Third Proportional to 9,159.75 and 13,916.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,159.75 : 13,916.25 = 13,916.25 : x
2. Step 2: Convert to fraction form
   9,159.75/13,916.25 = 13,916.25/x
3. Step 3: Cross multiply
   9,159.75x = 13,916.25 × 13,916.25
4. Step 4: Simplify right side
   9,159.75x = 193,662,014.06
5. Step 5: Solve for x
   x = 193,662,014.06/9,159.75
6. Step 6: Final answer
   x = 21,142.72