Finding the Third Proportional to 1,918.69 and 3,153.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918.69 : 3,153.94 = 3,153.94 : x
2. Step 2: Convert to fraction form
   1,918.69/3,153.94 = 3,153.94/x
3. Step 3: Cross multiply
   1,918.69x = 3,153.94 × 3,153.94
4. Step 4: Simplify right side
   1,918.69x = 9,947,321.75
5. Step 5: Solve for x
   x = 9,947,321.75/1,918.69
6. Step 6: Final answer
   x = 5,184.44