Finding the Third Proportional to 453,609 and 670,069.50

Step by Step Solution

1. Step 1: Write the proportion equation
   453,609 : 670,069.50 = 670,069.50 : x
2. Step 2: Convert to fraction form
   453,609/670,069.50 = 670,069.50/x
3. Step 3: Cross multiply
   453,609x = 670,069.50 × 670,069.50
4. Step 4: Simplify right side
   453,609x = 448,993,134,830.25
5. Step 5: Solve for x
   x = 448,993,134,830.25/453,609
6. Step 6: Final answer
   x = 989,824.13