Finding the Third Proportional to 372,818 and 810,436

Step by Step Solution

1. Step 1: Write the proportion equation
   372,818 : 810,436 = 810,436 : x
2. Step 2: Convert to fraction form
   372,818/810,436 = 810,436/x
3. Step 3: Cross multiply
   372,818x = 810,436 × 810,436
4. Step 4: Simplify right side
   372,818x = 656,806,510,096
5. Step 5: Solve for x
   x = 656,806,510,096/372,818
6. Step 6: Final answer
   x = 1,761,734.98