Finding the Third Proportional to 551,970 and 822,123

Step by Step Solution

1. Step 1: Write the proportion equation
   551,970 : 822,123 = 822,123 : x
2. Step 2: Convert to fraction form
   551,970/822,123 = 822,123/x
3. Step 3: Cross multiply
   551,970x = 822,123 × 822,123
4. Step 4: Simplify right side
   551,970x = 675,886,227,129
5. Step 5: Solve for x
   x = 675,886,227,129/551,970
6. Step 6: Final answer
   x = 1,224,498.12