Finding the Third Proportional to 181,489 and 280,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   181,489 : 280,387.50 = 280,387.50 : x
2. Step 2: Convert to fraction form
   181,489/280,387.50 = 280,387.50/x
3. Step 3: Cross multiply
   181,489x = 280,387.50 × 280,387.50
4. Step 4: Simplify right side
   181,489x = 78,617,150,156.25
5. Step 5: Solve for x
   x = 78,617,150,156.25/181,489
6. Step 6: Final answer
   x = 433,178.60