Finding the Third Proportional to 7,142,770 and 10,778,560

Step by Step Solution

1. Step 1: Write the proportion equation
   7,142,770 : 10,778,560 = 10,778,560 : x
2. Step 2: Convert to fraction form
   7,142,770/10,778,560 = 10,778,560/x
3. Step 3: Cross multiply
   7,142,770x = 10,778,560 × 10,778,560
4. Step 4: Simplify right side
   7,142,770x = 116,177,355,673,600
5. Step 5: Solve for x
   x = 116,177,355,673,600/7,142,770
6. Step 6: Final answer
   x = 16,265,028.23