Finding the Third Proportional to 308,476 and 672,986

Step by Step Solution

1. Step 1: Write the proportion equation
   308,476 : 672,986 = 672,986 : x
2. Step 2: Convert to fraction form
   308,476/672,986 = 672,986/x
3. Step 3: Cross multiply
   308,476x = 672,986 × 672,986
4. Step 4: Simplify right side
   308,476x = 452,910,156,196
5. Step 5: Solve for x
   x = 452,910,156,196/308,476
6. Step 6: Final answer
   x = 1,468,218.46