Finding the Third Proportional to 31,628 and 68,156

Step by Step Solution

1. Step 1: Write the proportion equation
   31,628 : 68,156 = 68,156 : x
2. Step 2: Convert to fraction form
   31,628/68,156 = 68,156/x
3. Step 3: Cross multiply
   31,628x = 68,156 × 68,156
4. Step 4: Simplify right side
   31,628x = 4,645,240,336
5. Step 5: Solve for x
   x = 4,645,240,336/31,628
6. Step 6: Final answer
   x = 146,871.14