Finding the Third Proportional to 155,672 and 245,980

Step by Step Solution

1. Step 1: Write the proportion equation
   155,672 : 245,980 = 245,980 : x
2. Step 2: Convert to fraction form
   155,672/245,980 = 245,980/x
3. Step 3: Cross multiply
   155,672x = 245,980 × 245,980
4. Step 4: Simplify right side
   155,672x = 60,506,160,400
5. Step 5: Solve for x
   x = 60,506,160,400/155,672
6. Step 6: Final answer
   x = 388,677.22