Finding the Third Proportional to 322,764 and 709,225.50

Step by Step Solution

1. Step 1: Write the proportion equation
   322,764 : 709,225.50 = 709,225.50 : x
2. Step 2: Convert to fraction form
   322,764/709,225.50 = 709,225.50/x
3. Step 3: Cross multiply
   322,764x = 709,225.50 × 709,225.50
4. Step 4: Simplify right side
   322,764x = 503,000,809,850.25
5. Step 5: Solve for x
   x = 503,000,809,850.25/322,764
6. Step 6: Final answer
   x = 1,558,416.71