Finding the Third Proportional to 42,509.81 and 90,760.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,509.81 : 90,760.50 = 90,760.50 : x
2. Step 2: Convert to fraction form
   42,509.81/90,760.50 = 90,760.50/x
3. Step 3: Cross multiply
   42,509.81x = 90,760.50 × 90,760.50
4. Step 4: Simplify right side
   42,509.81x = 8,237,468,360.25
5. Step 5: Solve for x
   x = 8,237,468,360.25/42,509.81
6. Step 6: Final answer
   x = 193,778.05