Finding the Third Proportional to 302,616 and 445,162.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,616 : 445,162.50 = 445,162.50 : x
2. Step 2: Convert to fraction form
   302,616/445,162.50 = 445,162.50/x
3. Step 3: Cross multiply
   302,616x = 445,162.50 × 445,162.50
4. Step 4: Simplify right side
   302,616x = 198,169,651,406.25
5. Step 5: Solve for x
   x = 198,169,651,406.25/302,616
6. Step 6: Final answer
   x = 654,855.17