Finding the Third Proportional to 2,157.38 and 4,873.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,157.38 : 4,873.50 = 4,873.50 : x
2. Step 2: Convert to fraction form
   2,157.38/4,873.50 = 4,873.50/x
3. Step 3: Cross multiply
   2,157.38x = 4,873.50 × 4,873.50
4. Step 4: Simplify right side
   2,157.38x = 23,751,002.25
5. Step 5: Solve for x
   x = 23,751,002.25/2,157.38
6. Step 6: Final answer
   x = 11,009.21