Finding the Third Proportional to 11,580 and 17,890

Step by Step Solution

1. Step 1: Write the proportion equation
   11,580 : 17,890 = 17,890 : x
2. Step 2: Convert to fraction form
   11,580/17,890 = 17,890/x
3. Step 3: Cross multiply
   11,580x = 17,890 × 17,890
4. Step 4: Simplify right side
   11,580x = 320,052,100
5. Step 5: Solve for x
   x = 320,052,100/11,580
6. Step 6: Final answer
   x = 27,638.35