Finding the Third Proportional to 12,940,647 and 20,298,298

Step by Step Solution

1. Step 1: Write the proportion equation
   12,940,647 : 20,298,298 = 20,298,298 : x
2. Step 2: Convert to fraction form
   12,940,647/20,298,298 = 20,298,298/x
3. Step 3: Cross multiply
   12,940,647x = 20,298,298 × 20,298,298
4. Step 4: Simplify right side
   12,940,647x = 412,020,901,696,804
5. Step 5: Solve for x
   x = 412,020,901,696,804/12,940,647
6. Step 6: Final answer
   x = 31,839,281.43