Finding the Third Proportional to 31,230 and 70,299

Step by Step Solution

1. Step 1: Write the proportion equation
   31,230 : 70,299 = 70,299 : x
2. Step 2: Convert to fraction form
   31,230/70,299 = 70,299/x
3. Step 3: Cross multiply
   31,230x = 70,299 × 70,299
4. Step 4: Simplify right side
   31,230x = 4,941,949,401
5. Step 5: Solve for x
   x = 4,941,949,401/31,230
6. Step 6: Final answer
   x = 158,243.66