Finding the Third Proportional to 537,664 and 810,648

Step by Step Solution

1. Step 1: Write the proportion equation
   537,664 : 810,648 = 810,648 : x
2. Step 2: Convert to fraction form
   537,664/810,648 = 810,648/x
3. Step 3: Cross multiply
   537,664x = 810,648 × 810,648
4. Step 4: Simplify right side
   537,664x = 657,150,179,904
5. Step 5: Solve for x
   x = 657,150,179,904/537,664
6. Step 6: Final answer
   x = 1,222,232.06