Finding the Third Proportional to 3,938,764 and 8,480,168

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938,764 : 8,480,168 = 8,480,168 : x
2. Step 2: Convert to fraction form
   3,938,764/8,480,168 = 8,480,168/x
3. Step 3: Cross multiply
   3,938,764x = 8,480,168 × 8,480,168
4. Step 4: Simplify right side
   3,938,764x = 71,913,249,308,224
5. Step 5: Solve for x
   x = 71,913,249,308,224/3,938,764
6. Step 6: Final answer
   x = 18,257,821.31