Finding the Third Proportional to 31,561.50 and 68,043

Step by Step Solution

1. Step 1: Write the proportion equation
   31,561.50 : 68,043 = 68,043 : x
2. Step 2: Convert to fraction form
   31,561.50/68,043 = 68,043/x
3. Step 3: Cross multiply
   31,561.50x = 68,043 × 68,043
4. Step 4: Simplify right side
   31,561.50x = 4,629,849,849
5. Step 5: Solve for x
   x = 4,629,849,849/31,561.50
6. Step 6: Final answer
   x = 146,692.96