Finding the Third Proportional to 1,212 and 1,860

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212 : 1,860 = 1,860 : x
2. Step 2: Convert to fraction form
   1,212/1,860 = 1,860/x
3. Step 3: Cross multiply
   1,212x = 1,860 × 1,860
4. Step 4: Simplify right side
   1,212x = 3,459,600
5. Step 5: Solve for x
   x = 3,459,600/1,212
6. Step 6: Final answer
   x = 2,854.46