Finding the Third Proportional to 86,247 and 187,681.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,247 : 187,681.50 = 187,681.50 : x
2. Step 2: Convert to fraction form
   86,247/187,681.50 = 187,681.50/x
3. Step 3: Cross multiply
   86,247x = 187,681.50 × 187,681.50
4. Step 4: Simplify right side
   86,247x = 35,224,345,442.25
5. Step 5: Solve for x
   x = 35,224,345,442.25/86,247
6. Step 6: Final answer
   x = 408,412.41