Finding the Third Proportional to 875.50 and 1,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   875.50 : 1,851.50 = 1,851.50 : x
2. Step 2: Convert to fraction form
   875.50/1,851.50 = 1,851.50/x
3. Step 3: Cross multiply
   875.50x = 1,851.50 × 1,851.50
4. Step 4: Simplify right side
   875.50x = 3,428,052.25
5. Step 5: Solve for x
   x = 3,428,052.25/875.50
6. Step 6: Final answer
   x = 3,915.54