Finding the Third Proportional to 28,431 and 43,861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,431 : 43,861.50 = 43,861.50 : x
2. Step 2: Convert to fraction form
   28,431/43,861.50 = 43,861.50/x
3. Step 3: Cross multiply
   28,431x = 43,861.50 × 43,861.50
4. Step 4: Simplify right side
   28,431x = 1,923,831,182.25
5. Step 5: Solve for x
   x = 1,923,831,182.25/28,431
6. Step 6: Final answer
   x = 67,666.67