Finding the Third Proportional to 13,078 and 20,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078 : 20,009.50 = 20,009.50 : x
2. Step 2: Convert to fraction form
   13,078/20,009.50 = 20,009.50/x
3. Step 3: Cross multiply
   13,078x = 20,009.50 × 20,009.50
4. Step 4: Simplify right side
   13,078x = 400,380,090.25
5. Step 5: Solve for x
   x = 400,380,090.25/13,078
6. Step 6: Final answer
   x = 30,614.78