Finding the Third Proportional to 250,335 and 387,380.25

Step by Step Solution

1. Step 1: Write the proportion equation
   250,335 : 387,380.25 = 387,380.25 : x
2. Step 2: Convert to fraction form
   250,335/387,380.25 = 387,380.25/x
3. Step 3: Cross multiply
   250,335x = 387,380.25 × 387,380.25
4. Step 4: Simplify right side
   250,335x = 150,063,458,090.06
5. Step 5: Solve for x
   x = 150,063,458,090.06/250,335
6. Step 6: Final answer
   x = 599,450.57