Finding the Third Proportional to 11,971.59 and 18,123.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,971.59 : 18,123.75 = 18,123.75 : x
2. Step 2: Convert to fraction form
   11,971.59/18,123.75 = 18,123.75/x
3. Step 3: Cross multiply
   11,971.59x = 18,123.75 × 18,123.75
4. Step 4: Simplify right side
   11,971.59x = 328,470,314.06
5. Step 5: Solve for x
   x = 328,470,314.06/11,971.59
6. Step 6: Final answer
   x = 27,437.48