Finding the Third Proportional to 199,469 and 291,488.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,469 : 291,488.50 = 291,488.50 : x
2. Step 2: Convert to fraction form
   199,469/291,488.50 = 291,488.50/x
3. Step 3: Cross multiply
   199,469x = 291,488.50 × 291,488.50
4. Step 4: Simplify right side
   199,469x = 84,965,545,632.25
5. Step 5: Solve for x
   x = 84,965,545,632.25/199,469
6. Step 6: Final answer
   x = 425,958.65