Finding the Third Proportional to 2,642.63 and 3,345.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.63 : 3,345.05 = 3,345.05 : x
2. Step 2: Convert to fraction form
   2,642.63/3,345.05 = 3,345.05/x
3. Step 3: Cross multiply
   2,642.63x = 3,345.05 × 3,345.05
4. Step 4: Simplify right side
   2,642.63x = 11,189,338.60
5. Step 5: Solve for x
   x = 11,189,338.60/2,642.63
6. Step 6: Final answer
   x = 4,234.18