Finding the Third Proportional to 391,059 and 584,842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   391,059 : 584,842.50 = 584,842.50 : x
2. Step 2: Convert to fraction form
   391,059/584,842.50 = 584,842.50/x
3. Step 3: Cross multiply
   391,059x = 584,842.50 × 584,842.50
4. Step 4: Simplify right side
   391,059x = 342,040,749,806.25
5. Step 5: Solve for x
   x = 342,040,749,806.25/391,059
6. Step 6: Final answer
   x = 874,652.55