Finding the Third Proportional to 1,818.09 and 3,914.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.09 : 3,914.53 = 3,914.53 : x
2. Step 2: Convert to fraction form
   1,818.09/3,914.53 = 3,914.53/x
3. Step 3: Cross multiply
   1,818.09x = 3,914.53 × 3,914.53
4. Step 4: Simplify right side
   1,818.09x = 15,323,554.91
5. Step 5: Solve for x
   x = 15,323,554.91/1,818.09
6. Step 6: Final answer
   x = 8,428.36