Finding the Third Proportional to 87,829.50 and 207,259.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,829.50 : 207,259.50 = 207,259.50 : x
2. Step 2: Convert to fraction form
   87,829.50/207,259.50 = 207,259.50/x
3. Step 3: Cross multiply
   87,829.50x = 207,259.50 × 207,259.50
4. Step 4: Simplify right side
   87,829.50x = 42,956,500,340.25
5. Step 5: Solve for x
   x = 42,956,500,340.25/87,829.50
6. Step 6: Final answer
   x = 489,089.66