Finding the Third Proportional to 31,855.50 and 69,543

Step by Step Solution

1. Step 1: Write the proportion equation
   31,855.50 : 69,543 = 69,543 : x
2. Step 2: Convert to fraction form
   31,855.50/69,543 = 69,543/x
3. Step 3: Cross multiply
   31,855.50x = 69,543 × 69,543
4. Step 4: Simplify right side
   31,855.50x = 4,836,228,849
5. Step 5: Solve for x
   x = 4,836,228,849/31,855.50
6. Step 6: Final answer
   x = 151,817.70