Finding the Third Proportional to 626,658 and 1,286,498

Step by Step Solution

1. Step 1: Write the proportion equation
   626,658 : 1,286,498 = 1,286,498 : x
2. Step 2: Convert to fraction form
   626,658/1,286,498 = 1,286,498/x
3. Step 3: Cross multiply
   626,658x = 1,286,498 × 1,286,498
4. Step 4: Simplify right side
   626,658x = 1,655,077,104,004
5. Step 5: Solve for x
   x = 1,655,077,104,004/626,658
6. Step 6: Final answer
   x = 2,641,117.01