Finding the Third Proportional to 404,258 and 606,336

Step by Step Solution

1. Step 1: Write the proportion equation
   404,258 : 606,336 = 606,336 : x
2. Step 2: Convert to fraction form
   404,258/606,336 = 606,336/x
3. Step 3: Cross multiply
   404,258x = 606,336 × 606,336
4. Step 4: Simplify right side
   404,258x = 367,643,344,896
5. Step 5: Solve for x
   x = 367,643,344,896/404,258
6. Step 6: Final answer
   x = 909,427.51