Finding the Third Proportional to 11,748.72 and 18,343.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,748.72 : 18,343.89 = 18,343.89 : x
2. Step 2: Convert to fraction form
   11,748.72/18,343.89 = 18,343.89/x
3. Step 3: Cross multiply
   11,748.72x = 18,343.89 × 18,343.89
4. Step 4: Simplify right side
   11,748.72x = 336,498,287.43
5. Step 5: Solve for x
   x = 336,498,287.43/11,748.72
6. Step 6: Final answer
   x = 28,641.28