Finding the Third Proportional to 387.88 and 1,007.50

Step by Step Solution

1. Step 1: Write the proportion equation
   387.88 : 1,007.50 = 1,007.50 : x
2. Step 2: Convert to fraction form
   387.88/1,007.50 = 1,007.50/x
3. Step 3: Cross multiply
   387.88x = 1,007.50 × 1,007.50
4. Step 4: Simplify right side
   387.88x = 1,015,056.25
5. Step 5: Solve for x
   x = 1,015,056.25/387.88
6. Step 6: Final answer
   x = 2,616.97