Finding the Third Proportional to 555,860 and 1,212,088

Step by Step Solution

1. Step 1: Write the proportion equation
   555,860 : 1,212,088 = 1,212,088 : x
2. Step 2: Convert to fraction form
   555,860/1,212,088 = 1,212,088/x
3. Step 3: Cross multiply
   555,860x = 1,212,088 × 1,212,088
4. Step 4: Simplify right side
   555,860x = 1,469,157,319,744
5. Step 5: Solve for x
   x = 1,469,157,319,744/555,860
6. Step 6: Final answer
   x = 2,643,034.79