Finding the Third Proportional to 1,820.81 and 2,799.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820.81 : 2,799.56 = 2,799.56 : x
2. Step 2: Convert to fraction form
   1,820.81/2,799.56 = 2,799.56/x
3. Step 3: Cross multiply
   1,820.81x = 2,799.56 × 2,799.56
4. Step 4: Simplify right side
   1,820.81x = 7,837,550.19
5. Step 5: Solve for x
   x = 7,837,550.19/1,820.81
6. Step 6: Final answer
   x = 4,304.42