Finding the Third Proportional to 663,858,181.69 and 1,447,859,206.69

Step by Step Solution

1. Step 1: Write the proportion equation
   663,858,181.69 : 1,447,859,206.69 = 1,447,859,206.69 : x
2. Step 2: Convert to fraction form
   663,858,181.69/1,447,859,206.69 = 1,447,859,206.69/x
3. Step 3: Cross multiply
   663,858,181.69x = 1,447,859,206.69 × 1,447,859,206.69
4. Step 4: Simplify right side
   663,858,181.69x = 2,096,296,282,389,756,928
5. Step 5: Solve for x
   x = 2,096,296,282,389,756,928/663,858,181.69
6. Step 6: Final answer
   x = 3,157,747,151.75