Finding the Third Proportional to 3,938,336 and 8,605,632

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938,336 : 8,605,632 = 8,605,632 : x
2. Step 2: Convert to fraction form
   3,938,336/8,605,632 = 8,605,632/x
3. Step 3: Cross multiply
   3,938,336x = 8,605,632 × 8,605,632
4. Step 4: Simplify right side
   3,938,336x = 74,056,902,119,424
5. Step 5: Solve for x
   x = 74,056,902,119,424/3,938,336
6. Step 6: Final answer
   x = 18,804,109.68