Finding the Third Proportional to 554,430 and 1,209,096

Step by Step Solution

1. Step 1: Write the proportion equation
   554,430 : 1,209,096 = 1,209,096 : x
2. Step 2: Convert to fraction form
   554,430/1,209,096 = 1,209,096/x
3. Step 3: Cross multiply
   554,430x = 1,209,096 × 1,209,096
4. Step 4: Simplify right side
   554,430x = 1,461,913,137,216
5. Step 5: Solve for x
   x = 1,461,913,137,216/554,430
6. Step 6: Final answer
   x = 2,636,785.77