Finding the Third Proportional to 1,868.88 and 3,931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.88 : 3,931.50 = 3,931.50 : x
2. Step 2: Convert to fraction form
   1,868.88/3,931.50 = 3,931.50/x
3. Step 3: Cross multiply
   1,868.88x = 3,931.50 × 3,931.50
4. Step 4: Simplify right side
   1,868.88x = 15,456,692.25
5. Step 5: Solve for x
   x = 15,456,692.25/1,868.88
6. Step 6: Final answer
   x = 8,270.59