Finding the Third Proportional to 9,106 and 12,907

Step by Step Solution

1. Step 1: Write the proportion equation
   9,106 : 12,907 = 12,907 : x
2. Step 2: Convert to fraction form
   9,106/12,907 = 12,907/x
3. Step 3: Cross multiply
   9,106x = 12,907 × 12,907
4. Step 4: Simplify right side
   9,106x = 166,590,649
5. Step 5: Solve for x
   x = 166,590,649/9,106
6. Step 6: Final answer
   x = 18,294.60