Finding the Third Proportional to 288,238 and 458,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   288,238 : 458,018.50 = 458,018.50 : x
2. Step 2: Convert to fraction form
   288,238/458,018.50 = 458,018.50/x
3. Step 3: Cross multiply
   288,238x = 458,018.50 × 458,018.50
4. Step 4: Simplify right side
   288,238x = 209,780,946,342.25
5. Step 5: Solve for x
   x = 209,780,946,342.25/288,238
6. Step 6: Final answer
   x = 727,804.61