Finding the Third Proportional to 112,129 and 238,792

Step by Step Solution

1. Step 1: Write the proportion equation
   112,129 : 238,792 = 238,792 : x
2. Step 2: Convert to fraction form
   112,129/238,792 = 238,792/x
3. Step 3: Cross multiply
   112,129x = 238,792 × 238,792
4. Step 4: Simplify right side
   112,129x = 57,021,619,264
5. Step 5: Solve for x
   x = 57,021,619,264/112,129
6. Step 6: Final answer
   x = 508,535.88