Finding the Third Proportional to 12,968,020 and 20,342,274

Step by Step Solution

1. Step 1: Write the proportion equation
   12,968,020 : 20,342,274 = 20,342,274 : x
2. Step 2: Convert to fraction form
   12,968,020/20,342,274 = 20,342,274/x
3. Step 3: Cross multiply
   12,968,020x = 20,342,274 × 20,342,274
4. Step 4: Simplify right side
   12,968,020x = 413,808,111,491,076
5. Step 5: Solve for x
   x = 413,808,111,491,076/12,968,020
6. Step 6: Final answer
   x = 31,909,891.52