Finding the Third Proportional to 258,162 and 559,225.50

Step by Step Solution

1. Step 1: Write the proportion equation
   258,162 : 559,225.50 = 559,225.50 : x
2. Step 2: Convert to fraction form
   258,162/559,225.50 = 559,225.50/x
3. Step 3: Cross multiply
   258,162x = 559,225.50 × 559,225.50
4. Step 4: Simplify right side
   258,162x = 312,733,159,850.25
5. Step 5: Solve for x
   x = 312,733,159,850.25/258,162
6. Step 6: Final answer
   x = 1,211,383.39