Finding the Third Proportional to 163,748.25 and 260,388

Step by Step Solution

1. Step 1: Write the proportion equation
   163,748.25 : 260,388 = 260,388 : x
2. Step 2: Convert to fraction form
   163,748.25/260,388 = 260,388/x
3. Step 3: Cross multiply
   163,748.25x = 260,388 × 260,388
4. Step 4: Simplify right side
   163,748.25x = 67,801,910,544
5. Step 5: Solve for x
   x = 67,801,910,544/163,748.25
6. Step 6: Final answer
   x = 414,061.89