Finding the Third Proportional to 190,435.50 and 279,760.50

Step by Step Solution

1. Step 1: Write the proportion equation
   190,435.50 : 279,760.50 = 279,760.50 : x
2. Step 2: Convert to fraction form
   190,435.50/279,760.50 = 279,760.50/x
3. Step 3: Cross multiply
   190,435.50x = 279,760.50 × 279,760.50
4. Step 4: Simplify right side
   190,435.50x = 78,265,937,360.25
5. Step 5: Solve for x
   x = 78,265,937,360.25/190,435.50
6. Step 6: Final answer
   x = 410,983.97