Finding the Third Proportional to 42,999 and 87,913.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,999 : 87,913.50 = 87,913.50 : x
2. Step 2: Convert to fraction form
   42,999/87,913.50 = 87,913.50/x
3. Step 3: Cross multiply
   42,999x = 87,913.50 × 87,913.50
4. Step 4: Simplify right side
   42,999x = 7,728,783,482.25
5. Step 5: Solve for x
   x = 7,728,783,482.25/42,999
6. Step 6: Final answer
   x = 179,743.33