Finding the Third Proportional to 553,852 and 1,210,212

Step by Step Solution

1. Step 1: Write the proportion equation
   553,852 : 1,210,212 = 1,210,212 : x
2. Step 2: Convert to fraction form
   553,852/1,210,212 = 1,210,212/x
3. Step 3: Cross multiply
   553,852x = 1,210,212 × 1,210,212
4. Step 4: Simplify right side
   553,852x = 1,464,613,084,944
5. Step 5: Solve for x
   x = 1,464,613,084,944/553,852
6. Step 6: Final answer
   x = 2,644,412.38