Finding the Third Proportional to 12,156 and 19,326

Step by Step Solution

1. Step 1: Write the proportion equation
   12,156 : 19,326 = 19,326 : x
2. Step 2: Convert to fraction form
   12,156/19,326 = 19,326/x
3. Step 3: Cross multiply
   12,156x = 19,326 × 19,326
4. Step 4: Simplify right side
   12,156x = 373,494,276
5. Step 5: Solve for x
   x = 373,494,276/12,156
6. Step 6: Final answer
   x = 30,725.10