Finding the Third Proportional to 155,500 and 247,550

Step by Step Solution

1. Step 1: Write the proportion equation
   155,500 : 247,550 = 247,550 : x
2. Step 2: Convert to fraction form
   155,500/247,550 = 247,550/x
3. Step 3: Cross multiply
   155,500x = 247,550 × 247,550
4. Step 4: Simplify right side
   155,500x = 61,281,002,500
5. Step 5: Solve for x
   x = 61,281,002,500/155,500
6. Step 6: Final answer
   x = 394,090.05