Finding the Third Proportional to 31,212 and 67,606

Step by Step Solution

1. Step 1: Write the proportion equation
   31,212 : 67,606 = 67,606 : x
2. Step 2: Convert to fraction form
   31,212/67,606 = 67,606/x
3. Step 3: Cross multiply
   31,212x = 67,606 × 67,606
4. Step 4: Simplify right side
   31,212x = 4,570,571,236
5. Step 5: Solve for x
   x = 4,570,571,236/31,212
6. Step 6: Final answer
   x = 146,436.35