Finding the Third Proportional to 688,334 and 1,036,666

Step by Step Solution

1. Step 1: Write the proportion equation
   688,334 : 1,036,666 = 1,036,666 : x
2. Step 2: Convert to fraction form
   688,334/1,036,666 = 1,036,666/x
3. Step 3: Cross multiply
   688,334x = 1,036,666 × 1,036,666
4. Step 4: Simplify right side
   688,334x = 1,074,676,395,556
5. Step 5: Solve for x
   x = 1,074,676,395,556/688,334
6. Step 6: Final answer
   x = 1,561,271.70