Finding the Third Proportional to 445,624 and 670,572.50

Step by Step Solution

1. Step 1: Write the proportion equation
   445,624 : 670,572.50 = 670,572.50 : x
2. Step 2: Convert to fraction form
   445,624/670,572.50 = 670,572.50/x
3. Step 3: Cross multiply
   445,624x = 670,572.50 × 670,572.50
4. Step 4: Simplify right side
   445,624x = 449,667,477,756.25
5. Step 5: Solve for x
   x = 449,667,477,756.25/445,624
6. Step 6: Final answer
   x = 1,009,073.74