Finding the Third Proportional to 4,061,688 and 8,644,992

Step by Step Solution

1. Step 1: Write the proportion equation
   4,061,688 : 8,644,992 = 8,644,992 : x
2. Step 2: Convert to fraction form
   4,061,688/8,644,992 = 8,644,992/x
3. Step 3: Cross multiply
   4,061,688x = 8,644,992 × 8,644,992
4. Step 4: Simplify right side
   4,061,688x = 74,735,886,680,064
5. Step 5: Solve for x
   x = 74,735,886,680,064/4,061,688
6. Step 6: Final answer
   x = 18,400,203.73