Finding the Third Proportional to 3,350.81 and 7,790.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,350.81 : 7,790.63 = 7,790.63 : x
2. Step 2: Convert to fraction form
   3,350.81/7,790.63 = 7,790.63/x
3. Step 3: Cross multiply
   3,350.81x = 7,790.63 × 7,790.63
4. Step 4: Simplify right side
   3,350.81x = 60,693,837.89
5. Step 5: Solve for x
   x = 60,693,837.89/3,350.81
6. Step 6: Final answer
   x = 18,113.17