Finding the Third Proportional to 231,426 and 507,240

Step by Step Solution

1. Step 1: Write the proportion equation
   231,426 : 507,240 = 507,240 : x
2. Step 2: Convert to fraction form
   231,426/507,240 = 507,240/x
3. Step 3: Cross multiply
   231,426x = 507,240 × 507,240
4. Step 4: Simplify right side
   231,426x = 257,292,417,600
5. Step 5: Solve for x
   x = 257,292,417,600/231,426
6. Step 6: Final answer
   x = 1,111,769.71