Finding the Third Proportional to 258,359.63 and 554,095.69

Step by Step Solution

1. Step 1: Write the proportion equation
   258,359.63 : 554,095.69 = 554,095.69 : x
2. Step 2: Convert to fraction form
   258,359.63/554,095.69 = 554,095.69/x
3. Step 3: Cross multiply
   258,359.63x = 554,095.69 × 554,095.69
4. Step 4: Simplify right side
   258,359.63x = 307,022,030,906.10
5. Step 5: Solve for x
   x = 307,022,030,906.10/258,359.63
6. Step 6: Final answer
   x = 1,188,351.43