Finding the Third Proportional to 112,721 and 238,015

Step by Step Solution

1. Step 1: Write the proportion equation
   112,721 : 238,015 = 238,015 : x
2. Step 2: Convert to fraction form
   112,721/238,015 = 238,015/x
3. Step 3: Cross multiply
   112,721x = 238,015 × 238,015
4. Step 4: Simplify right side
   112,721x = 56,651,140,225
5. Step 5: Solve for x
   x = 56,651,140,225/112,721
6. Step 6: Final answer
   x = 502,578.40