Finding the Third Proportional to 168,480 and 253,404

Step by Step Solution

1. Step 1: Write the proportion equation
   168,480 : 253,404 = 253,404 : x
2. Step 2: Convert to fraction form
   168,480/253,404 = 253,404/x
3. Step 3: Cross multiply
   168,480x = 253,404 × 253,404
4. Step 4: Simplify right side
   168,480x = 64,213,587,216
5. Step 5: Solve for x
   x = 64,213,587,216/168,480
6. Step 6: Final answer
   x = 381,134.78