Finding the Third Proportional to 520,864 and 1,115,456

Step by Step Solution

1. Step 1: Write the proportion equation
   520,864 : 1,115,456 = 1,115,456 : x
2. Step 2: Convert to fraction form
   520,864/1,115,456 = 1,115,456/x
3. Step 3: Cross multiply
   520,864x = 1,115,456 × 1,115,456
4. Step 4: Simplify right side
   520,864x = 1,244,242,087,936
5. Step 5: Solve for x
   x = 1,244,242,087,936/520,864
6. Step 6: Final answer
   x = 2,388,804.16