Finding the Third Proportional to 404,756 and 608,438

Step by Step Solution

1. Step 1: Write the proportion equation
   404,756 : 608,438 = 608,438 : x
2. Step 2: Convert to fraction form
   404,756/608,438 = 608,438/x
3. Step 3: Cross multiply
   404,756x = 608,438 × 608,438
4. Step 4: Simplify right side
   404,756x = 370,196,799,844
5. Step 5: Solve for x
   x = 370,196,799,844/404,756
6. Step 6: Final answer
   x = 914,617.20