Finding the Third Proportional to 12,619.69 and 18,684.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,619.69 : 18,684.56 = 18,684.56 : x
2. Step 2: Convert to fraction form
   12,619.69/18,684.56 = 18,684.56/x
3. Step 3: Cross multiply
   12,619.69x = 18,684.56 × 18,684.56
4. Step 4: Simplify right side
   12,619.69x = 349,112,875.82
5. Step 5: Solve for x
   x = 349,112,875.82/12,619.69
6. Step 6: Final answer
   x = 27,664.15