Finding the Third Proportional to 248,790.75 and 374,978.25

Step by Step Solution

1. Step 1: Write the proportion equation
   248,790.75 : 374,978.25 = 374,978.25 : x
2. Step 2: Convert to fraction form
   248,790.75/374,978.25 = 374,978.25/x
3. Step 3: Cross multiply
   248,790.75x = 374,978.25 × 374,978.25
4. Step 4: Simplify right side
   248,790.75x = 140,608,687,973.06
5. Step 5: Solve for x
   x = 140,608,687,973.06/248,790.75
6. Step 6: Final answer
   x = 565,168.47