Finding the Third Proportional to 550,514 and 1,212,786

Step by Step Solution

1. Step 1: Write the proportion equation
   550,514 : 1,212,786 = 1,212,786 : x
2. Step 2: Convert to fraction form
   550,514/1,212,786 = 1,212,786/x
3. Step 3: Cross multiply
   550,514x = 1,212,786 × 1,212,786
4. Step 4: Simplify right side
   550,514x = 1,470,849,881,796
5. Step 5: Solve for x
   x = 1,470,849,881,796/550,514
6. Step 6: Final answer
   x = 2,671,775.62