Finding the Third Proportional to 30,531 and 64,342

Step by Step Solution

1. Step 1: Write the proportion equation
   30,531 : 64,342 = 64,342 : x
2. Step 2: Convert to fraction form
   30,531/64,342 = 64,342/x
3. Step 3: Cross multiply
   30,531x = 64,342 × 64,342
4. Step 4: Simplify right side
   30,531x = 4,139,892,964
5. Step 5: Solve for x
   x = 4,139,892,964/30,531
6. Step 6: Final answer
   x = 135,596.38