Finding the Third Proportional to 10,131.75 and 14,919.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.75 : 14,919.75 = 14,919.75 : x
2. Step 2: Convert to fraction form
   10,131.75/14,919.75 = 14,919.75/x
3. Step 3: Cross multiply
   10,131.75x = 14,919.75 × 14,919.75
4. Step 4: Simplify right side
   10,131.75x = 222,598,940.06
5. Step 5: Solve for x
   x = 222,598,940.06/10,131.75
6. Step 6: Final answer
   x = 21,970.43