Finding the Third Proportional to 379,080 and 810,648

Step by Step Solution

1. Step 1: Write the proportion equation
   379,080 : 810,648 = 810,648 : x
2. Step 2: Convert to fraction form
   379,080/810,648 = 810,648/x
3. Step 3: Cross multiply
   379,080x = 810,648 × 810,648
4. Step 4: Simplify right side
   379,080x = 657,150,179,904
5. Step 5: Solve for x
   x = 657,150,179,904/379,080
6. Step 6: Final answer
   x = 1,733,539.57