Finding the Third Proportional to 8,434.76 and 12,834.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,434.76 : 12,834.39 = 12,834.39 : x
2. Step 2: Convert to fraction form
   8,434.76/12,834.39 = 12,834.39/x
3. Step 3: Cross multiply
   8,434.76x = 12,834.39 × 12,834.39
4. Step 4: Simplify right side
   8,434.76x = 164,721,482.45
5. Step 5: Solve for x
   x = 164,721,482.45/8,434.76
6. Step 6: Final answer
   x = 19,528.89