Finding the Third Proportional to 8,870 and 13,612

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870 : 13,612 = 13,612 : x
2. Step 2: Convert to fraction form
   8,870/13,612 = 13,612/x
3. Step 3: Cross multiply
   8,870x = 13,612 × 13,612
4. Step 4: Simplify right side
   8,870x = 185,286,544
5. Step 5: Solve for x
   x = 185,286,544/8,870
6. Step 6: Final answer
   x = 20,889.13