Finding the Third Proportional to 551,495.25 and 843,111.28

Step by Step Solution

1. Step 1: Write the proportion equation
   551,495.25 : 843,111.28 = 843,111.28 : x
2. Step 2: Convert to fraction form
   551,495.25/843,111.28 = 843,111.28/x
3. Step 3: Cross multiply
   551,495.25x = 843,111.28 × 843,111.28
4. Step 4: Simplify right side
   551,495.25x = 710,836,632,571.02
5. Step 5: Solve for x
   x = 710,836,632,571.02/551,495.25
6. Step 6: Final answer
   x = 1,288,926.12