Finding the Third Proportional to 2,213.86 and 3,455.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.86 : 3,455.34 = 3,455.34 : x
2. Step 2: Convert to fraction form
   2,213.86/3,455.34 = 3,455.34/x
3. Step 3: Cross multiply
   2,213.86x = 3,455.34 × 3,455.34
4. Step 4: Simplify right side
   2,213.86x = 11,939,400.43
5. Step 5: Solve for x
   x = 11,939,400.43/2,213.86
6. Step 6: Final answer
   x = 5,393.03