Finding the Third Proportional to 250,499,042.50 and 518,181,344.50

Step by Step Solution

1. Step 1: Write the proportion equation
   250,499,042.50 : 518,181,344.50 = 518,181,344.50 : x
2. Step 2: Convert to fraction form
   250,499,042.50/518,181,344.50 = 518,181,344.50/x
3. Step 3: Cross multiply
   250,499,042.50x = 518,181,344.50 × 518,181,344.50
4. Step 4: Simplify right side
   250,499,042.50x = 268,511,905,787,827,680
5. Step 5: Solve for x
   x = 268,511,905,787,827,680/250,499,042.50
6. Step 6: Final answer
   x = 1,071,907,912.73