Finding the Third Proportional to 6,809.81 and 10,412.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,809.81 : 10,412.72 = 10,412.72 : x
2. Step 2: Convert to fraction form
   6,809.81/10,412.72 = 10,412.72/x
3. Step 3: Cross multiply
   6,809.81x = 10,412.72 × 10,412.72
4. Step 4: Simplify right side
   6,809.81x = 108,424,711.77
5. Step 5: Solve for x
   x = 108,424,711.77/6,809.81
6. Step 6: Final answer
   x = 15,921.84