Finding the Third Proportional to 1,819.69 and 2,815.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819.69 : 2,815.88 = 2,815.88 : x
2. Step 2: Convert to fraction form
   1,819.69/2,815.88 = 2,815.88/x
3. Step 3: Cross multiply
   1,819.69x = 2,815.88 × 2,815.88
4. Step 4: Simplify right side
   1,819.69x = 7,929,152.02
5. Step 5: Solve for x
   x = 7,929,152.02/1,819.69
6. Step 6: Final answer
   x = 4,357.43