Finding the Third Proportional to 12,715.50 and 18,343.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,715.50 : 18,343.50 = 18,343.50 : x
2. Step 2: Convert to fraction form
   12,715.50/18,343.50 = 18,343.50/x
3. Step 3: Cross multiply
   12,715.50x = 18,343.50 × 18,343.50
4. Step 4: Simplify right side
   12,715.50x = 336,483,992.25
5. Step 5: Solve for x
   x = 336,483,992.25/12,715.50
6. Step 6: Final answer
   x = 26,462.51