Finding the Third Proportional to 5,410.13 and 12,917.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,410.13 : 12,917.81 = 12,917.81 : x
2. Step 2: Convert to fraction form
   5,410.13/12,917.81 = 12,917.81/x
3. Step 3: Cross multiply
   5,410.13x = 12,917.81 × 12,917.81
4. Step 4: Simplify right side
   5,410.13x = 166,869,879.79
5. Step 5: Solve for x
   x = 166,869,879.79/5,410.13
6. Step 6: Final answer
   x = 30,844.00