Finding the Third Proportional to 168,415.50 and 254,372

Step by Step Solution

1. Step 1: Write the proportion equation
   168,415.50 : 254,372 = 254,372 : x
2. Step 2: Convert to fraction form
   168,415.50/254,372 = 254,372/x
3. Step 3: Cross multiply
   168,415.50x = 254,372 × 254,372
4. Step 4: Simplify right side
   168,415.50x = 64,705,114,384
5. Step 5: Solve for x
   x = 64,705,114,384/168,415.50
6. Step 6: Final answer
   x = 384,199.28