Finding the Third Proportional to 1,387.13 and 3,301.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,387.13 : 3,301.31 = 3,301.31 : x
2. Step 2: Convert to fraction form
   1,387.13/3,301.31 = 3,301.31/x
3. Step 3: Cross multiply
   1,387.13x = 3,301.31 × 3,301.31
4. Step 4: Simplify right side
   1,387.13x = 10,898,664.22
5. Step 5: Solve for x
   x = 10,898,664.22/1,387.13
6. Step 6: Final answer
   x = 7,857.02