Finding the Third Proportional to 31,800 and 50,342

Step by Step Solution

1. Step 1: Write the proportion equation
   31,800 : 50,342 = 50,342 : x
2. Step 2: Convert to fraction form
   31,800/50,342 = 50,342/x
3. Step 3: Cross multiply
   31,800x = 50,342 × 50,342
4. Step 4: Simplify right side
   31,800x = 2,534,316,964
5. Step 5: Solve for x
   x = 2,534,316,964/31,800
6. Step 6: Final answer
   x = 79,695.50