Finding the Third Proportional to 1,918.69 and 2,603.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918.69 : 2,603.81 = 2,603.81 : x
2. Step 2: Convert to fraction form
   1,918.69/2,603.81 = 2,603.81/x
3. Step 3: Cross multiply
   1,918.69x = 2,603.81 × 2,603.81
4. Step 4: Simplify right side
   1,918.69x = 6,779,839.54
5. Step 5: Solve for x
   x = 6,779,839.54/1,918.69
6. Step 6: Final answer
   x = 3,533.58