Finding the Third Proportional to 31,273 and 67,478

Step by Step Solution

1. Step 1: Write the proportion equation
   31,273 : 67,478 = 67,478 : x
2. Step 2: Convert to fraction form
   31,273/67,478 = 67,478/x
3. Step 3: Cross multiply
   31,273x = 67,478 × 67,478
4. Step 4: Simplify right side
   31,273x = 4,553,280,484
5. Step 5: Solve for x
   x = 4,553,280,484/31,273
6. Step 6: Final answer
   x = 145,597.82