Finding the Third Proportional to 879.50 and 1,787.50

Step by Step Solution

1. Step 1: Write the proportion equation
   879.50 : 1,787.50 = 1,787.50 : x
2. Step 2: Convert to fraction form
   879.50/1,787.50 = 1,787.50/x
3. Step 3: Cross multiply
   879.50x = 1,787.50 × 1,787.50
4. Step 4: Simplify right side
   879.50x = 3,195,156.25
5. Step 5: Solve for x
   x = 3,195,156.25/879.50
6. Step 6: Final answer
   x = 3,632.92