Finding the Third Proportional to 162,561.30 and 258,891.82

Step by Step Solution

1. Step 1: Write the proportion equation
   162,561.30 : 258,891.82 = 258,891.82 : x
2. Step 2: Convert to fraction form
   162,561.30/258,891.82 = 258,891.82/x
3. Step 3: Cross multiply
   162,561.30x = 258,891.82 × 258,891.82
4. Step 4: Simplify right side
   162,561.30x = 67,024,974,624.72
5. Step 5: Solve for x
   x = 67,024,974,624.72/162,561.30
6. Step 6: Final answer
   x = 412,305.84