Finding the Third Proportional to 436,485 and 673,409.50

Step by Step Solution

1. Step 1: Write the proportion equation
   436,485 : 673,409.50 = 673,409.50 : x
2. Step 2: Convert to fraction form
   436,485/673,409.50 = 673,409.50/x
3. Step 3: Cross multiply
   436,485x = 673,409.50 × 673,409.50
4. Step 4: Simplify right side
   436,485x = 453,480,354,690.25
5. Step 5: Solve for x
   x = 453,480,354,690.25/436,485
6. Step 6: Final answer
   x = 1,038,936.86