Finding the Third Proportional to 2,830.39 and 4,321.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.39 : 4,321.67 = 4,321.67 : x
2. Step 2: Convert to fraction form
   2,830.39/4,321.67 = 4,321.67/x
3. Step 3: Cross multiply
   2,830.39x = 4,321.67 × 4,321.67
4. Step 4: Simplify right side
   2,830.39x = 18,676,868.90
5. Step 5: Solve for x
   x = 18,676,868.90/2,830.39
6. Step 6: Final answer
   x = 6,598.69