Finding the Third Proportional to 112,528 and 240,128

Step by Step Solution

1. Step 1: Write the proportion equation
   112,528 : 240,128 = 240,128 : x
2. Step 2: Convert to fraction form
   112,528/240,128 = 240,128/x
3. Step 3: Cross multiply
   112,528x = 240,128 × 240,128
4. Step 4: Simplify right side
   112,528x = 57,661,456,384
5. Step 5: Solve for x
   x = 57,661,456,384/112,528
6. Step 6: Final answer
   x = 512,418.74