Finding the Third Proportional to 2,154.94 and 4,379.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.94 : 4,379.06 = 4,379.06 : x
2. Step 2: Convert to fraction form
   2,154.94/4,379.06 = 4,379.06/x
3. Step 3: Cross multiply
   2,154.94x = 4,379.06 × 4,379.06
4. Step 4: Simplify right side
   2,154.94x = 19,176,188.38
5. Step 5: Solve for x
   x = 19,176,188.38/2,154.94
6. Step 6: Final answer
   x = 8,898.72