Finding the Third Proportional to 408,049.50 and 612,075

Step by Step Solution

1. Step 1: Write the proportion equation
   408,049.50 : 612,075 = 612,075 : x
2. Step 2: Convert to fraction form
   408,049.50/612,075 = 612,075/x
3. Step 3: Cross multiply
   408,049.50x = 612,075 × 612,075
4. Step 4: Simplify right side
   408,049.50x = 374,635,805,625
5. Step 5: Solve for x
   x = 374,635,805,625/408,049.50
6. Step 6: Final answer
   x = 918,113.63