Finding the Third Proportional to 308,308 and 672,496

Step by Step Solution

1. Step 1: Write the proportion equation
   308,308 : 672,496 = 672,496 : x
2. Step 2: Convert to fraction form
   308,308/672,496 = 672,496/x
3. Step 3: Cross multiply
   308,308x = 672,496 × 672,496
4. Step 4: Simplify right side
   308,308x = 452,250,870,016
5. Step 5: Solve for x
   x = 452,250,870,016/308,308
6. Step 6: Final answer
   x = 1,466,880.10