Finding the Third Proportional to 554,128 and 1,211,936

Step by Step Solution

1. Step 1: Write the proportion equation
   554,128 : 1,211,936 = 1,211,936 : x
2. Step 2: Convert to fraction form
   554,128/1,211,936 = 1,211,936/x
3. Step 3: Cross multiply
   554,128x = 1,211,936 × 1,211,936
4. Step 4: Simplify right side
   554,128x = 1,468,788,868,096
5. Step 5: Solve for x
   x = 1,468,788,868,096/554,128
6. Step 6: Final answer
   x = 2,650,631.02