Finding the Third Proportional to 18,117.56 and 38,913.38

Step by Step Solution

1. Step 1: Write the proportion equation
   18,117.56 : 38,913.38 = 38,913.38 : x
2. Step 2: Convert to fraction form
   18,117.56/38,913.38 = 38,913.38/x
3. Step 3: Cross multiply
   18,117.56x = 38,913.38 × 38,913.38
4. Step 4: Simplify right side
   18,117.56x = 1,514,250,753.89
5. Step 5: Solve for x
   x = 1,514,250,753.89/18,117.56
6. Step 6: Final answer
   x = 83,579.17