Finding the Third Proportional to 121,153.50 and 248,352

Step by Step Solution

1. Step 1: Write the proportion equation
   121,153.50 : 248,352 = 248,352 : x
2. Step 2: Convert to fraction form
   121,153.50/248,352 = 248,352/x
3. Step 3: Cross multiply
   121,153.50x = 248,352 × 248,352
4. Step 4: Simplify right side
   121,153.50x = 61,678,715,904
5. Step 5: Solve for x
   x = 61,678,715,904/121,153.50
6. Step 6: Final answer
   x = 509,095.62