Finding the Third Proportional to 145,789,136 and 321,294,740

Step by Step Solution

1. Step 1: Write the proportion equation
   145,789,136 : 321,294,740 = 321,294,740 : x
2. Step 2: Convert to fraction form
   145,789,136/321,294,740 = 321,294,740/x
3. Step 3: Cross multiply
   145,789,136x = 321,294,740 × 321,294,740
4. Step 4: Simplify right side
   145,789,136x = 103,230,309,951,667,600
5. Step 5: Solve for x
   x = 103,230,309,951,667,600/145,789,136
6. Step 6: Final answer
   x = 708,079,578.38