Finding the Third Proportional to 319,067,269,308 and 691,082,123,540

Step by Step Solution

1. Step 1: Write the proportion equation
   319,067,269,308 : 691,082,123,540 = 691,082,123,540 : x
2. Step 2: Convert to fraction form
   319,067,269,308/691,082,123,540 = 691,082,123,540/x
3. Step 3: Cross multiply
   319,067,269,308x = 691,082,123,540 × 691,082,123,540
4. Step 4: Simplify right side
   319,067,269,308x = 477,594,501,476,555,836,882,944
5. Step 5: Solve for x
   x = 477,594,501,476,555,836,882,944/319,067,269,308
6. Step 6: Final answer
   x = 1,496,845,798,418.54