Finding the Third Proportional to 10,276 and 12,985

Step by Step Solution

1. Step 1: Write the proportion equation
   10,276 : 12,985 = 12,985 : x
2. Step 2: Convert to fraction form
   10,276/12,985 = 12,985/x
3. Step 3: Cross multiply
   10,276x = 12,985 × 12,985
4. Step 4: Simplify right side
   10,276x = 168,610,225
5. Step 5: Solve for x
   x = 168,610,225/10,276
6. Step 6: Final answer
   x = 16,408.16