Finding the Third Proportional to 427,558,443 and 660,972,105

Step by Step Solution

1. Step 1: Write the proportion equation
   427,558,443 : 660,972,105 = 660,972,105 : x
2. Step 2: Convert to fraction form
   427,558,443/660,972,105 = 660,972,105/x
3. Step 3: Cross multiply
   427,558,443x = 660,972,105 × 660,972,105
4. Step 4: Simplify right side
   427,558,443x = 436,884,123,588,131,008
5. Step 5: Solve for x
   x = 436,884,123,588,131,008/427,558,443
6. Step 6: Final answer
   x = 1,021,811,475.70