Finding the Third Proportional to 13,667.63 and 20,430

Step by Step Solution

1. Step 1: Write the proportion equation
   13,667.63 : 20,430 = 20,430 : x
2. Step 2: Convert to fraction form
   13,667.63/20,430 = 20,430/x
3. Step 3: Cross multiply
   13,667.63x = 20,430 × 20,430
4. Step 4: Simplify right side
   13,667.63x = 417,384,900
5. Step 5: Solve for x
   x = 417,384,900/13,667.63
6. Step 6: Final answer
   x = 30,538.22