Finding the Third Proportional to 12,488.63 and 18,543.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.63 : 18,543.38 = 18,543.38 : x
2. Step 2: Convert to fraction form
   12,488.63/18,543.38 = 18,543.38/x
3. Step 3: Cross multiply
   12,488.63x = 18,543.38 × 18,543.38
4. Step 4: Simplify right side
   12,488.63x = 343,856,756.39
5. Step 5: Solve for x
   x = 343,856,756.39/12,488.63
6. Step 6: Final answer
   x = 27,533.60