Finding the Third Proportional to 12,087 and 19,426

Step by Step Solution

1. Step 1: Write the proportion equation
   12,087 : 19,426 = 19,426 : x
2. Step 2: Convert to fraction form
   12,087/19,426 = 19,426/x
3. Step 3: Cross multiply
   12,087x = 19,426 × 19,426
4. Step 4: Simplify right side
   12,087x = 377,369,476
5. Step 5: Solve for x
   x = 377,369,476/12,087
6. Step 6: Final answer
   x = 31,221.10