Finding the Third Proportional to 1,930.50 and 3,900.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,930.50 : 3,900.38 = 3,900.38 : x
2. Step 2: Convert to fraction form
   1,930.50/3,900.38 = 3,900.38/x
3. Step 3: Cross multiply
   1,930.50x = 3,900.38 × 3,900.38
4. Step 4: Simplify right side
   1,930.50x = 15,212,925.14
5. Step 5: Solve for x
   x = 15,212,925.14/1,930.50
6. Step 6: Final answer
   x = 7,880.30