Finding the Third Proportional to 3,498.19 and 4,450.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,498.19 : 4,450.78 = 4,450.78 : x
2. Step 2: Convert to fraction form
   3,498.19/4,450.78 = 4,450.78/x
3. Step 3: Cross multiply
   3,498.19x = 4,450.78 × 4,450.78
4. Step 4: Simplify right side
   3,498.19x = 19,809,453.74
5. Step 5: Solve for x
   x = 19,809,453.74/3,498.19
6. Step 6: Final answer
   x = 5,662.78