Finding the Third Proportional to 309,262 and 659,023

Step by Step Solution

1. Step 1: Write the proportion equation
   309,262 : 659,023 = 659,023 : x
2. Step 2: Convert to fraction form
   309,262/659,023 = 659,023/x
3. Step 3: Cross multiply
   309,262x = 659,023 × 659,023
4. Step 4: Simplify right side
   309,262x = 434,311,314,529
5. Step 5: Solve for x
   x = 434,311,314,529/309,262
6. Step 6: Final answer
   x = 1,404,347.49