Finding the Third Proportional to 623,616 and 1,363,872

Step by Step Solution

1. Step 1: Write the proportion equation
   623,616 : 1,363,872 = 1,363,872 : x
2. Step 2: Convert to fraction form
   623,616/1,363,872 = 1,363,872/x
3. Step 3: Cross multiply
   623,616x = 1,363,872 × 1,363,872
4. Step 4: Simplify right side
   623,616x = 1,860,146,832,384
5. Step 5: Solve for x
   x = 1,860,146,832,384/623,616
6. Step 6: Final answer
   x = 2,982,840.13