Finding the Third Proportional to 1,787.63 and 2,671.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,787.63 : 2,671.31 = 2,671.31 : x
2. Step 2: Convert to fraction form
   1,787.63/2,671.31 = 2,671.31/x
3. Step 3: Cross multiply
   1,787.63x = 2,671.31 × 2,671.31
4. Step 4: Simplify right side
   1,787.63x = 7,135,910.47
5. Step 5: Solve for x
   x = 7,135,910.47/1,787.63
6. Step 6: Final answer
   x = 3,991.84