Finding the Third Proportional to 121,168 and 248,213.50

Step by Step Solution

1. Step 1: Write the proportion equation
   121,168 : 248,213.50 = 248,213.50 : x
2. Step 2: Convert to fraction form
   121,168/248,213.50 = 248,213.50/x
3. Step 3: Cross multiply
   121,168x = 248,213.50 × 248,213.50
4. Step 4: Simplify right side
   121,168x = 61,609,941,582.25
5. Step 5: Solve for x
   x = 61,609,941,582.25/121,168
6. Step 6: Final answer
   x = 508,467.10