Finding the Third Proportional to 309,662 and 436,075

Step by Step Solution

1. Step 1: Write the proportion equation
   309,662 : 436,075 = 436,075 : x
2. Step 2: Convert to fraction form
   309,662/436,075 = 436,075/x
3. Step 3: Cross multiply
   309,662x = 436,075 × 436,075
4. Step 4: Simplify right side
   309,662x = 190,161,405,625
5. Step 5: Solve for x
   x = 190,161,405,625/309,662
6. Step 6: Final answer
   x = 614,093.45