Finding the Third Proportional to 42,136.50 and 89,467.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,136.50 : 89,467.50 = 89,467.50 : x
2. Step 2: Convert to fraction form
   42,136.50/89,467.50 = 89,467.50/x
3. Step 3: Cross multiply
   42,136.50x = 89,467.50 × 89,467.50
4. Step 4: Simplify right side
   42,136.50x = 8,004,433,556.25
5. Step 5: Solve for x
   x = 8,004,433,556.25/42,136.50
6. Step 6: Final answer
   x = 189,964.37