Finding the Third Proportional to 250,615.50 and 551,079

Step by Step Solution

1. Step 1: Write the proportion equation
   250,615.50 : 551,079 = 551,079 : x
2. Step 2: Convert to fraction form
   250,615.50/551,079 = 551,079/x
3. Step 3: Cross multiply
   250,615.50x = 551,079 × 551,079
4. Step 4: Simplify right side
   250,615.50x = 303,688,064,241
5. Step 5: Solve for x
   x = 303,688,064,241/250,615.50
6. Step 6: Final answer
   x = 1,211,768.88