Finding the Third Proportional to 3,914.25 and 8,384.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.25 : 8,384.63 = 8,384.63 : x
2. Step 2: Convert to fraction form
   3,914.25/8,384.63 = 8,384.63/x
3. Step 3: Cross multiply
   3,914.25x = 8,384.63 × 8,384.63
4. Step 4: Simplify right side
   3,914.25x = 70,301,936.39
5. Step 5: Solve for x
   x = 70,301,936.39/3,914.25
6. Step 6: Final answer
   x = 17,960.51