Finding the Third Proportional to 258,174 and 559,237.50

Step by Step Solution

1. Step 1: Write the proportion equation
   258,174 : 559,237.50 = 559,237.50 : x
2. Step 2: Convert to fraction form
   258,174/559,237.50 = 559,237.50/x
3. Step 3: Cross multiply
   258,174x = 559,237.50 × 559,237.50
4. Step 4: Simplify right side
   258,174x = 312,746,581,406.25
5. Step 5: Solve for x
   x = 312,746,581,406.25/258,174
6. Step 6: Final answer
   x = 1,211,379.08