| 612 | = | 1 2 | x | × | 1 200 | × | 1 200 | + | 1 200 | x | × | 119 200 |
| Right side of the equation = | 1 80000 | x | + | 119 40000 | x |
| = | 239 80000 | x |
| 612 | = | 239 80000 | x |
| - | 239 80000 | x | = | - | 612 |
| 612 | = | 239 80000 | x |
239 80000 | x | = | 612 |
| x | = | 612 | ÷ | 239 80000 |
| = | 612 | × | 80000 239 |
| x | = | 48960000 239 |
| x | = | 204853.556485 |