Finding the Third Proportional to 31,023 and 67,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,023 : 67,621.50 = 67,621.50 : x
2. Step 2: Convert to fraction form
   31,023/67,621.50 = 67,621.50/x
3. Step 3: Cross multiply
   31,023x = 67,621.50 × 67,621.50
4. Step 4: Simplify right side
   31,023x = 4,572,667,262.25
5. Step 5: Solve for x
   x = 4,572,667,262.25/31,023
6. Step 6: Final answer
   x = 147,396.04