Finding the Third Proportional to 31,920 and 53,015

Step by Step Solution

1. Step 1: Write the proportion equation
   31,920 : 53,015 = 53,015 : x
2. Step 2: Convert to fraction form
   31,920/53,015 = 53,015/x
3. Step 3: Cross multiply
   31,920x = 53,015 × 53,015
4. Step 4: Simplify right side
   31,920x = 2,810,590,225
5. Step 5: Solve for x
   x = 2,810,590,225/31,920
6. Step 6: Final answer
   x = 88,051.07