Finding the Third Proportional to 4,072.78 and 4,417.03

Step by Step Solution

1. Step 1: Write the proportion equation
   4,072.78 : 4,417.03 = 4,417.03 : x
2. Step 2: Convert to fraction form
   4,072.78/4,417.03 = 4,417.03/x
3. Step 3: Cross multiply
   4,072.78x = 4,417.03 × 4,417.03
4. Step 4: Simplify right side
   4,072.78x = 19,510,165.06
5. Step 5: Solve for x
   x = 19,510,165.06/4,072.78
6. Step 6: Final answer
   x = 4,790.38