Finding the Third Proportional to 11,798 and 18,109

Step by Step Solution

1. Step 1: Write the proportion equation
   11,798 : 18,109 = 18,109 : x
2. Step 2: Convert to fraction form
   11,798/18,109 = 18,109/x
3. Step 3: Cross multiply
   11,798x = 18,109 × 18,109
4. Step 4: Simplify right side
   11,798x = 327,935,881
5. Step 5: Solve for x
   x = 327,935,881/11,798
6. Step 6: Final answer
   x = 27,795.89