Finding the Third Proportional to 13,638.38 and 30,182.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,638.38 : 30,182.63 = 30,182.63 : x
2. Step 2: Convert to fraction form
   13,638.38/30,182.63 = 30,182.63/x
3. Step 3: Cross multiply
   13,638.38x = 30,182.63 × 30,182.63
4. Step 4: Simplify right side
   13,638.38x = 910,990,851.89
5. Step 5: Solve for x
   x = 910,990,851.89/13,638.38
6. Step 6: Final answer
   x = 66,796.14