Finding the Third Proportional to 2,415.75 and 5,091

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.75 : 5,091 = 5,091 : x
2. Step 2: Convert to fraction form
   2,415.75/5,091 = 5,091/x
3. Step 3: Cross multiply
   2,415.75x = 5,091 × 5,091
4. Step 4: Simplify right side
   2,415.75x = 25,918,281
5. Step 5: Solve for x
   x = 25,918,281/2,415.75
6. Step 6: Final answer
   x = 10,728.88