Finding the Third Proportional to 31,317 and 67,560

Step by Step Solution

1. Step 1: Write the proportion equation
   31,317 : 67,560 = 67,560 : x
2. Step 2: Convert to fraction form
   31,317/67,560 = 67,560/x
3. Step 3: Cross multiply
   31,317x = 67,560 × 67,560
4. Step 4: Simplify right side
   31,317x = 4,564,353,600
5. Step 5: Solve for x
   x = 4,564,353,600/31,317
6. Step 6: Final answer
   x = 145,746.83