Finding the Third Proportional to 302,787 and 636,941.25

Step by Step Solution

1. Step 1: Write the proportion equation
   302,787 : 636,941.25 = 636,941.25 : x
2. Step 2: Convert to fraction form
   302,787/636,941.25 = 636,941.25/x
3. Step 3: Cross multiply
   302,787x = 636,941.25 × 636,941.25
4. Step 4: Simplify right side
   302,787x = 405,694,155,951.56
5. Step 5: Solve for x
   x = 405,694,155,951.56/302,787
6. Step 6: Final answer
   x = 1,339,866.49