Finding the Third Proportional to 19,717.17 and 27,666.40

Step by Step Solution

1. Step 1: Write the proportion equation
   19,717.17 : 27,666.40 = 27,666.40 : x
2. Step 2: Convert to fraction form
   19,717.17/27,666.40 = 27,666.40/x
3. Step 3: Cross multiply
   19,717.17x = 27,666.40 × 27,666.40
4. Step 4: Simplify right side
   19,717.17x = 765,429,926.72
5. Step 5: Solve for x
   x = 765,429,926.72/19,717.17
6. Step 6: Final answer
   x = 38,820.47