Finding the Third Proportional to 425,190 and 659,311.50

Step by Step Solution

1. Step 1: Write the proportion equation
   425,190 : 659,311.50 = 659,311.50 : x
2. Step 2: Convert to fraction form
   425,190/659,311.50 = 659,311.50/x
3. Step 3: Cross multiply
   425,190x = 659,311.50 × 659,311.50
4. Step 4: Simplify right side
   425,190x = 434,691,654,032.25
5. Step 5: Solve for x
   x = 434,691,654,032.25/425,190
6. Step 6: Final answer
   x = 1,022,346.84