Finding the Third Proportional to 12,570.47 and 18,638.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,570.47 : 18,638.25 = 18,638.25 : x
2. Step 2: Convert to fraction form
   12,570.47/18,638.25 = 18,638.25/x
3. Step 3: Cross multiply
   12,570.47x = 18,638.25 × 18,638.25
4. Step 4: Simplify right side
   12,570.47x = 347,384,363.06
5. Step 5: Solve for x
   x = 347,384,363.06/12,570.47
6. Step 6: Final answer
   x = 27,634.96