Finding the Third Proportional to 1,511.72 and 2,335.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.72 : 2,335.78 = 2,335.78 : x
2. Step 2: Convert to fraction form
   1,511.72/2,335.78 = 2,335.78/x
3. Step 3: Cross multiply
   1,511.72x = 2,335.78 × 2,335.78
4. Step 4: Simplify right side
   1,511.72x = 5,455,874.05
5. Step 5: Solve for x
   x = 5,455,874.05/1,511.72
6. Step 6: Final answer
   x = 3,609.05