Finding the Third Proportional to 386,463 and 613,282.50

Step by Step Solution

1. Step 1: Write the proportion equation
   386,463 : 613,282.50 = 613,282.50 : x
2. Step 2: Convert to fraction form
   386,463/613,282.50 = 613,282.50/x
3. Step 3: Cross multiply
   386,463x = 613,282.50 × 613,282.50
4. Step 4: Simplify right side
   386,463x = 376,115,424,806.25
5. Step 5: Solve for x
   x = 376,115,424,806.25/386,463
6. Step 6: Final answer
   x = 973,224.93