Finding the Third Proportional to 4,936.50 and 7,815.38

Step by Step Solution

1. Step 1: Write the proportion equation
   4,936.50 : 7,815.38 = 7,815.38 : x
2. Step 2: Convert to fraction form
   4,936.50/7,815.38 = 7,815.38/x
3. Step 3: Cross multiply
   4,936.50x = 7,815.38 × 7,815.38
4. Step 4: Simplify right side
   4,936.50x = 61,080,086.39
5. Step 5: Solve for x
   x = 61,080,086.39/4,936.50
6. Step 6: Final answer
   x = 12,373.16