Finding the Third Proportional to 915.75 and 1,401

Step by Step Solution

1. Step 1: Write the proportion equation
   915.75 : 1,401 = 1,401 : x
2. Step 2: Convert to fraction form
   915.75/1,401 = 1,401/x
3. Step 3: Cross multiply
   915.75x = 1,401 × 1,401
4. Step 4: Simplify right side
   915.75x = 1,962,801
5. Step 5: Solve for x
   x = 1,962,801/915.75
6. Step 6: Final answer
   x = 2,143.38