Finding the Third Proportional to 552,658 and 1,210,540

Step by Step Solution

1. Step 1: Write the proportion equation
   552,658 : 1,210,540 = 1,210,540 : x
2. Step 2: Convert to fraction form
   552,658/1,210,540 = 1,210,540/x
3. Step 3: Cross multiply
   552,658x = 1,210,540 × 1,210,540
4. Step 4: Simplify right side
   552,658x = 1,465,407,091,600
5. Step 5: Solve for x
   x = 1,465,407,091,600/552,658
6. Step 6: Final answer
   x = 2,651,562.25