Finding the Third Proportional to 688,393 and 1,491,196

Step by Step Solution

1. Step 1: Write the proportion equation
   688,393 : 1,491,196 = 1,491,196 : x
2. Step 2: Convert to fraction form
   688,393/1,491,196 = 1,491,196/x
3. Step 3: Cross multiply
   688,393x = 1,491,196 × 1,491,196
4. Step 4: Simplify right side
   688,393x = 2,223,665,510,416
5. Step 5: Solve for x
   x = 2,223,665,510,416/688,393
6. Step 6: Final answer
   x = 3,230,226.79