Finding the Third Proportional to 1,438.31 and 2,356.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438.31 : 2,356.31 = 2,356.31 : x
2. Step 2: Convert to fraction form
   1,438.31/2,356.31 = 2,356.31/x
3. Step 3: Cross multiply
   1,438.31x = 2,356.31 × 2,356.31
4. Step 4: Simplify right side
   1,438.31x = 5,552,208.60
5. Step 5: Solve for x
   x = 5,552,208.60/1,438.31
6. Step 6: Final answer
   x = 3,860.22