Finding the Third Proportional to 685,624 and 1,476,609

Step by Step Solution

1. Step 1: Write the proportion equation
   685,624 : 1,476,609 = 1,476,609 : x
2. Step 2: Convert to fraction form
   685,624/1,476,609 = 1,476,609/x
3. Step 3: Cross multiply
   685,624x = 1,476,609 × 1,476,609
4. Step 4: Simplify right side
   685,624x = 2,180,374,138,881
5. Step 5: Solve for x
   x = 2,180,374,138,881/685,624
6. Step 6: Final answer
   x = 3,180,131.00