Finding the Third Proportional to 30,312 and 64,834

Step by Step Solution

1. Step 1: Write the proportion equation
   30,312 : 64,834 = 64,834 : x
2. Step 2: Convert to fraction form
   30,312/64,834 = 64,834/x
3. Step 3: Cross multiply
   30,312x = 64,834 × 64,834
4. Step 4: Simplify right side
   30,312x = 4,203,447,556
5. Step 5: Solve for x
   x = 4,203,447,556/30,312
6. Step 6: Final answer
   x = 138,672.72