Finding the Third Proportional to 45,778.50 and 67,439.25

Step by Step Solution

1. Step 1: Write the proportion equation
   45,778.50 : 67,439.25 = 67,439.25 : x
2. Step 2: Convert to fraction form
   45,778.50/67,439.25 = 67,439.25/x
3. Step 3: Cross multiply
   45,778.50x = 67,439.25 × 67,439.25
4. Step 4: Simplify right side
   45,778.50x = 4,548,052,440.56
5. Step 5: Solve for x
   x = 4,548,052,440.56/45,778.50
6. Step 6: Final answer
   x = 99,349.09