Finding the Third Proportional to 18,979.31 and 30,164.91

Step by Step Solution

1. Step 1: Write the proportion equation
   18,979.31 : 30,164.91 = 30,164.91 : x
2. Step 2: Convert to fraction form
   18,979.31/30,164.91 = 30,164.91/x
3. Step 3: Cross multiply
   18,979.31x = 30,164.91 × 30,164.91
4. Step 4: Simplify right side
   18,979.31x = 909,921,569.07
5. Step 5: Solve for x
   x = 909,921,569.07/18,979.31
6. Step 6: Final answer
   x = 47,942.81