Finding the Third Proportional to 876.50 and 1,356

Step by Step Solution

1. Step 1: Write the proportion equation
   876.50 : 1,356 = 1,356 : x
2. Step 2: Convert to fraction form
   876.50/1,356 = 1,356/x
3. Step 3: Cross multiply
   876.50x = 1,356 × 1,356
4. Step 4: Simplify right side
   876.50x = 1,838,736
5. Step 5: Solve for x
   x = 1,838,736/876.50
6. Step 6: Final answer
   x = 2,097.82