Finding the Third Proportional to 357,750 and 501,390

Step by Step Solution

1. Step 1: Write the proportion equation
   357,750 : 501,390 = 501,390 : x
2. Step 2: Convert to fraction form
   357,750/501,390 = 501,390/x
3. Step 3: Cross multiply
   357,750x = 501,390 × 501,390
4. Step 4: Simplify right side
   357,750x = 251,391,932,100
5. Step 5: Solve for x
   x = 251,391,932,100/357,750
6. Step 6: Final answer
   x = 702,702.82