Finding the Third Proportional to 30,987 and 67,076

Step by Step Solution

1. Step 1: Write the proportion equation
   30,987 : 67,076 = 67,076 : x
2. Step 2: Convert to fraction form
   30,987/67,076 = 67,076/x
3. Step 3: Cross multiply
   30,987x = 67,076 × 67,076
4. Step 4: Simplify right side
   30,987x = 4,499,189,776
5. Step 5: Solve for x
   x = 4,499,189,776/30,987
6. Step 6: Final answer
   x = 145,196.04