Finding the Third Proportional to 550,410 and 1,212,558

Step by Step Solution

1. Step 1: Write the proportion equation
   550,410 : 1,212,558 = 1,212,558 : x
2. Step 2: Convert to fraction form
   550,410/1,212,558 = 1,212,558/x
3. Step 3: Cross multiply
   550,410x = 1,212,558 × 1,212,558
4. Step 4: Simplify right side
   550,410x = 1,470,296,903,364
5. Step 5: Solve for x
   x = 1,470,296,903,364/550,410
6. Step 6: Final answer
   x = 2,671,275.78