Finding the Third Proportional to 129,261,660 and 282,846,648

Step by Step Solution

1. Step 1: Write the proportion equation
   129,261,660 : 282,846,648 = 282,846,648 : x
2. Step 2: Convert to fraction form
   129,261,660/282,846,648 = 282,846,648/x
3. Step 3: Cross multiply
   129,261,660x = 282,846,648 × 282,846,648
4. Step 4: Simplify right side
   129,261,660x = 80,002,226,284,835,904
5. Step 5: Solve for x
   x = 80,002,226,284,835,904/129,261,660
6. Step 6: Final answer
   x = 618,916,903.01