Finding the Third Proportional to 98,579.72 and 209,464.69

Step by Step Solution

1. Step 1: Write the proportion equation
   98,579.72 : 209,464.69 = 209,464.69 : x
2. Step 2: Convert to fraction form
   98,579.72/209,464.69 = 209,464.69/x
3. Step 3: Cross multiply
   98,579.72x = 209,464.69 × 209,464.69
4. Step 4: Simplify right side
   98,579.72x = 43,875,455,309.47
5. Step 5: Solve for x
   x = 43,875,455,309.47/98,579.72
6. Step 6: Final answer
   x = 445,075.88