Finding the Third Proportional to 554,998 and 830,269.25

Step by Step Solution

1. Step 1: Write the proportion equation
   554,998 : 830,269.25 = 830,269.25 : x
2. Step 2: Convert to fraction form
   554,998/830,269.25 = 830,269.25/x
3. Step 3: Cross multiply
   554,998x = 830,269.25 × 830,269.25
4. Step 4: Simplify right side
   554,998x = 689,347,027,495.56
5. Step 5: Solve for x
   x = 689,347,027,495.56/554,998
6. Step 6: Final answer
   x = 1,242,071.19