Finding the Third Proportional to 8,364 and 12,958.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,364 : 12,958.50 = 12,958.50 : x
2. Step 2: Convert to fraction form
   8,364/12,958.50 = 12,958.50/x
3. Step 3: Cross multiply
   8,364x = 12,958.50 × 12,958.50
4. Step 4: Simplify right side
   8,364x = 167,922,722.25
5. Step 5: Solve for x
   x = 167,922,722.25/8,364
6. Step 6: Final answer
   x = 20,076.84