Finding the Third Proportional to 8,309.81 and 12,342.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309.81 : 12,342.94 = 12,342.94 : x
2. Step 2: Convert to fraction form
   8,309.81/12,342.94 = 12,342.94/x
3. Step 3: Cross multiply
   8,309.81x = 12,342.94 × 12,342.94
4. Step 4: Simplify right side
   8,309.81x = 152,348,106.13
5. Step 5: Solve for x
   x = 152,348,106.13/8,309.81
6. Step 6: Final answer
   x = 18,333.52