Finding the Third Proportional to 105,979.50 and 231,880.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,979.50 : 231,880.50 = 231,880.50 : x
2. Step 2: Convert to fraction form
   105,979.50/231,880.50 = 231,880.50/x
3. Step 3: Cross multiply
   105,979.50x = 231,880.50 × 231,880.50
4. Step 4: Simplify right side
   105,979.50x = 53,768,566,280.25
5. Step 5: Solve for x
   x = 53,768,566,280.25/105,979.50
6. Step 6: Final answer
   x = 507,348.74