Finding the Third Proportional to 308,701,638,546 and 668,688,042,180

Step by Step Solution

1. Step 1: Write the proportion equation
   308,701,638,546 : 668,688,042,180 = 668,688,042,180 : x
2. Step 2: Convert to fraction form
   308,701,638,546/668,688,042,180 = 668,688,042,180/x
3. Step 3: Cross multiply
   308,701,638,546x = 668,688,042,180 × 668,688,042,180
4. Step 4: Simplify right side
   308,701,638,546x = 447,143,697,754,521,488,850,944
5. Step 5: Solve for x
   x = 447,143,697,754,521,488,850,944/308,701,638,546
6. Step 6: Final answer
   x = 1,448,465,579,452.67