Finding the Third Proportional to 231,840 and 507,960

Step by Step Solution

1. Step 1: Write the proportion equation
   231,840 : 507,960 = 507,960 : x
2. Step 2: Convert to fraction form
   231,840/507,960 = 507,960/x
3. Step 3: Cross multiply
   231,840x = 507,960 × 507,960
4. Step 4: Simplify right side
   231,840x = 258,023,361,600
5. Step 5: Solve for x
   x = 258,023,361,600/231,840
6. Step 6: Final answer
   x = 1,112,937.20