Finding the Third Proportional to 917,388 and 2,072,616

Step by Step Solution

1. Step 1: Write the proportion equation
   917,388 : 2,072,616 = 2,072,616 : x
2. Step 2: Convert to fraction form
   917,388/2,072,616 = 2,072,616/x
3. Step 3: Cross multiply
   917,388x = 2,072,616 × 2,072,616
4. Step 4: Simplify right side
   917,388x = 4,295,737,083,456
5. Step 5: Solve for x
   x = 4,295,737,083,456/917,388
6. Step 6: Final answer
   x = 4,682,573.88