Finding the Third Proportional to 4,991.63 and 7,760.25

Step by Step Solution

1. Step 1: Write the proportion equation
   4,991.63 : 7,760.25 = 7,760.25 : x
2. Step 2: Convert to fraction form
   4,991.63/7,760.25 = 7,760.25/x
3. Step 3: Cross multiply
   4,991.63x = 7,760.25 × 7,760.25
4. Step 4: Simplify right side
   4,991.63x = 60,221,480.06
5. Step 5: Solve for x
   x = 60,221,480.06/4,991.63
6. Step 6: Final answer
   x = 12,064.50