Finding the Third Proportional to 31,030 and 64,684

Step by Step Solution

1. Step 1: Write the proportion equation
   31,030 : 64,684 = 64,684 : x
2. Step 2: Convert to fraction form
   31,030/64,684 = 64,684/x
3. Step 3: Cross multiply
   31,030x = 64,684 × 64,684
4. Step 4: Simplify right side
   31,030x = 4,184,019,856
5. Step 5: Solve for x
   x = 4,184,019,856/31,030
6. Step 6: Final answer
   x = 134,837.89