Finding the Third Proportional to 1,212.47 and 1,814.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212.47 : 1,814.91 = 1,814.91 : x
2. Step 2: Convert to fraction form
   1,212.47/1,814.91 = 1,814.91/x
3. Step 3: Cross multiply
   1,212.47x = 1,814.91 × 1,814.91
4. Step 4: Simplify right side
   1,212.47x = 3,293,884.70
5. Step 5: Solve for x
   x = 3,293,884.70/1,212.47
6. Step 6: Final answer
   x = 2,716.68