Finding the Third Proportional to 18,426.23 and 39,479.91

Step by Step Solution

1. Step 1: Write the proportion equation
   18,426.23 : 39,479.91 = 39,479.91 : x
2. Step 2: Convert to fraction form
   18,426.23/39,479.91 = 39,479.91/x
3. Step 3: Cross multiply
   18,426.23x = 39,479.91 × 39,479.91
4. Step 4: Simplify right side
   18,426.23x = 1,558,662,997.51
5. Step 5: Solve for x
   x = 1,558,662,997.51/18,426.23
6. Step 6: Final answer
   x = 84,589.34