Finding the Third Proportional to 2,381.91 and 5,164.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.91 : 5,164.31 = 5,164.31 : x
2. Step 2: Convert to fraction form
   2,381.91/5,164.31 = 5,164.31/x
3. Step 3: Cross multiply
   2,381.91x = 5,164.31 × 5,164.31
4. Step 4: Simplify right side
   2,381.91x = 26,670,123.60
5. Step 5: Solve for x
   x = 26,670,123.60/2,381.91
6. Step 6: Final answer
   x = 11,196.97