Finding the Third Proportional to 554,904 and 830,837.25

Step by Step Solution

1. Step 1: Write the proportion equation
   554,904 : 830,837.25 = 830,837.25 : x
2. Step 2: Convert to fraction form
   554,904/830,837.25 = 830,837.25/x
3. Step 3: Cross multiply
   554,904x = 830,837.25 × 830,837.25
4. Step 4: Simplify right side
   554,904x = 690,290,535,987.56
5. Step 5: Solve for x
   x = 690,290,535,987.56/554,904
6. Step 6: Final answer
   x = 1,243,981.91