Finding the Third Proportional to 8,155 and 12,310

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155 : 12,310 = 12,310 : x
2. Step 2: Convert to fraction form
   8,155/12,310 = 12,310/x
3. Step 3: Cross multiply
   8,155x = 12,310 × 12,310
4. Step 4: Simplify right side
   8,155x = 151,536,100
5. Step 5: Solve for x
   x = 151,536,100/8,155
6. Step 6: Final answer
   x = 18,581.99