Finding the Third Proportional to 245,607 and 369,321.75

Step by Step Solution

1. Step 1: Write the proportion equation
   245,607 : 369,321.75 = 369,321.75 : x
2. Step 2: Convert to fraction form
   245,607/369,321.75 = 369,321.75/x
3. Step 3: Cross multiply
   245,607x = 369,321.75 × 369,321.75
4. Step 4: Simplify right side
   245,607x = 136,398,555,023.06
5. Step 5: Solve for x
   x = 136,398,555,023.06/245,607
6. Step 6: Final answer
   x = 555,352.88