Finding the Third Proportional to 1,251 and 1,877.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,251 : 1,877.50 = 1,877.50 : x
2. Step 2: Convert to fraction form
   1,251/1,877.50 = 1,877.50/x
3. Step 3: Cross multiply
   1,251x = 1,877.50 × 1,877.50
4. Step 4: Simplify right side
   1,251x = 3,525,006.25
5. Step 5: Solve for x
   x = 3,525,006.25/1,251
6. Step 6: Final answer
   x = 2,817.75