Finding the Third Proportional to 13,158 and 19,877.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,158 : 19,877.63 = 19,877.63 : x
2. Step 2: Convert to fraction form
   13,158/19,877.63 = 19,877.63/x
3. Step 3: Cross multiply
   13,158x = 19,877.63 × 19,877.63
4. Step 4: Simplify right side
   13,158x = 395,119,975.64
5. Step 5: Solve for x
   x = 395,119,975.64/13,158
6. Step 6: Final answer
   x = 30,028.88