Finding the Third Proportional to 308,311 and 672,502

Step by Step Solution

1. Step 1: Write the proportion equation
   308,311 : 672,502 = 672,502 : x
2. Step 2: Convert to fraction form
   308,311/672,502 = 672,502/x
3. Step 3: Cross multiply
   308,311x = 672,502 × 672,502
4. Step 4: Simplify right side
   308,311x = 452,258,940,004
5. Step 5: Solve for x
   x = 452,258,940,004/308,311
6. Step 6: Final answer
   x = 1,466,892.00