Finding the Third Proportional to 273,970,613,420 and 419,144,362,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   273,970,613,420 : 419,144,362,086.50 = 419,144,362,086.50 : x
2. Step 2: Convert to fraction form
   273,970,613,420/419,144,362,086.50 = 419,144,362,086.50/x
3. Step 3: Cross multiply
   273,970,613,420x = 419,144,362,086.50 × 419,144,362,086.50
4. Step 4: Simplify right side
   273,970,613,420x = 175,681,996,268,899,032,629,248
5. Step 5: Solve for x
   x = 175,681,996,268,899,032,629,248/273,970,613,420
6. Step 6: Final answer
   x = 641,243,942,464.65