Finding the Third Proportional to 688,340 and 1,476,322

Step by Step Solution

1. Step 1: Write the proportion equation
   688,340 : 1,476,322 = 1,476,322 : x
2. Step 2: Convert to fraction form
   688,340/1,476,322 = 1,476,322/x
3. Step 3: Cross multiply
   688,340x = 1,476,322 × 1,476,322
4. Step 4: Simplify right side
   688,340x = 2,179,526,647,684
5. Step 5: Solve for x
   x = 2,179,526,647,684/688,340
6. Step 6: Final answer
   x = 3,166,351.87