Finding the Third Proportional to 2,289.75 and 4,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.75 : 4,987.50 = 4,987.50 : x
2. Step 2: Convert to fraction form
   2,289.75/4,987.50 = 4,987.50/x
3. Step 3: Cross multiply
   2,289.75x = 4,987.50 × 4,987.50
4. Step 4: Simplify right side
   2,289.75x = 24,875,156.25
5. Step 5: Solve for x
   x = 24,875,156.25/2,289.75
6. Step 6: Final answer
   x = 10,863.70