Finding the Third Proportional to 403,075 and 609,150

Step by Step Solution

1. Step 1: Write the proportion equation
   403,075 : 609,150 = 609,150 : x
2. Step 2: Convert to fraction form
   403,075/609,150 = 609,150/x
3. Step 3: Cross multiply
   403,075x = 609,150 × 609,150
4. Step 4: Simplify right side
   403,075x = 371,063,722,500
5. Step 5: Solve for x
   x = 371,063,722,500/403,075
6. Step 6: Final answer
   x = 920,582.33