Finding the Third Proportional to 12,117.94 and 18,619.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,117.94 : 18,619.88 = 18,619.88 : x
2. Step 2: Convert to fraction form
   12,117.94/18,619.88 = 18,619.88/x
3. Step 3: Cross multiply
   12,117.94x = 18,619.88 × 18,619.88
4. Step 4: Simplify right side
   12,117.94x = 346,699,745.02
5. Step 5: Solve for x
   x = 346,699,745.02/12,117.94
6. Step 6: Final answer
   x = 28,610.46