Finding the Third Proportional to 18,988.17 and 27,827.30

Step by Step Solution

1. Step 1: Write the proportion equation
   18,988.17 : 27,827.30 = 27,827.30 : x
2. Step 2: Convert to fraction form
   18,988.17/27,827.30 = 27,827.30/x
3. Step 3: Cross multiply
   18,988.17x = 27,827.30 × 27,827.30
4. Step 4: Simplify right side
   18,988.17x = 774,358,451.37
5. Step 5: Solve for x
   x = 774,358,451.37/18,988.17
6. Step 6: Final answer
   x = 40,781.10