Finding the Third Proportional to 42,987 and 91,509.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,987 : 91,509.50 = 91,509.50 : x
2. Step 2: Convert to fraction form
   42,987/91,509.50 = 91,509.50/x
3. Step 3: Cross multiply
   42,987x = 91,509.50 × 91,509.50
4. Step 4: Simplify right side
   42,987x = 8,373,988,590.25
5. Step 5: Solve for x
   x = 8,373,988,590.25/42,987
6. Step 6: Final answer
   x = 194,802.81