Finding the Third Proportional to 12,005 and 18,992.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,005 : 18,992.50 = 18,992.50 : x
2. Step 2: Convert to fraction form
   12,005/18,992.50 = 18,992.50/x
3. Step 3: Cross multiply
   12,005x = 18,992.50 × 18,992.50
4. Step 4: Simplify right side
   12,005x = 360,715,056.25
5. Step 5: Solve for x
   x = 360,715,056.25/12,005
6. Step 6: Final answer
   x = 30,047.07