Finding the Third Proportional to 1,045.09 and 1,386.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.09 : 1,386.81 = 1,386.81 : x
2. Step 2: Convert to fraction form
   1,045.09/1,386.81 = 1,386.81/x
3. Step 3: Cross multiply
   1,045.09x = 1,386.81 × 1,386.81
4. Step 4: Simplify right side
   1,045.09x = 1,923,238.08
5. Step 5: Solve for x
   x = 1,923,238.08/1,045.09
6. Step 6: Final answer
   x = 1,840.26