Finding the Third Proportional to 196,978,689 and 302,144,256

Step by Step Solution

1. Step 1: Write the proportion equation
   196,978,689 : 302,144,256 = 302,144,256 : x
2. Step 2: Convert to fraction form
   196,978,689/302,144,256 = 302,144,256/x
3. Step 3: Cross multiply
   196,978,689x = 302,144,256 × 302,144,256
4. Step 4: Simplify right side
   196,978,689x = 91,291,151,433,793,536
5. Step 5: Solve for x
   x = 91,291,151,433,793,536/196,978,689
6. Step 6: Final answer
   x = 463,456,995.77