Finding the Third Proportional to 31,300 and 67,907

Step by Step Solution

1. Step 1: Write the proportion equation
   31,300 : 67,907 = 67,907 : x
2. Step 2: Convert to fraction form
   31,300/67,907 = 67,907/x
3. Step 3: Cross multiply
   31,300x = 67,907 × 67,907
4. Step 4: Simplify right side
   31,300x = 4,611,360,649
5. Step 5: Solve for x
   x = 4,611,360,649/31,300
6. Step 6: Final answer
   x = 147,327.82