Finding the Third Proportional to 251,007 and 551,608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   251,007 : 551,608.50 = 551,608.50 : x
2. Step 2: Convert to fraction form
   251,007/551,608.50 = 551,608.50/x
3. Step 3: Cross multiply
   251,007x = 551,608.50 × 551,608.50
4. Step 4: Simplify right side
   251,007x = 304,271,937,272.25
5. Step 5: Solve for x
   x = 304,271,937,272.25/251,007
6. Step 6: Final answer
   x = 1,212,204.99