Finding the Third Proportional to 554,910 and 830,845.50

Step by Step Solution

1. Step 1: Write the proportion equation
   554,910 : 830,845.50 = 830,845.50 : x
2. Step 2: Convert to fraction form
   554,910/830,845.50 = 830,845.50/x
3. Step 3: Cross multiply
   554,910x = 830,845.50 × 830,845.50
4. Step 4: Simplify right side
   554,910x = 690,304,244,870.25
5. Step 5: Solve for x
   x = 690,304,244,870.25/554,910
6. Step 6: Final answer
   x = 1,243,993.16