Finding the Third Proportional to 30,267 and 64,139

Step by Step Solution

1. Step 1: Write the proportion equation
   30,267 : 64,139 = 64,139 : x
2. Step 2: Convert to fraction form
   30,267/64,139 = 64,139/x
3. Step 3: Cross multiply
   30,267x = 64,139 × 64,139
4. Step 4: Simplify right side
   30,267x = 4,113,811,321
5. Step 5: Solve for x
   x = 4,113,811,321/30,267
6. Step 6: Final answer
   x = 135,917.38