Finding the Third Proportional to 12,156.75 and 14,910.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,156.75 : 14,910.75 = 14,910.75 : x
2. Step 2: Convert to fraction form
   12,156.75/14,910.75 = 14,910.75/x
3. Step 3: Cross multiply
   12,156.75x = 14,910.75 × 14,910.75
4. Step 4: Simplify right side
   12,156.75x = 222,330,465.56
5. Step 5: Solve for x
   x = 222,330,465.56/12,156.75
6. Step 6: Final answer
   x = 18,288.64