Finding the Third Proportional to 306,759 and 716,452.50

Step by Step Solution

1. Step 1: Write the proportion equation
   306,759 : 716,452.50 = 716,452.50 : x
2. Step 2: Convert to fraction form
   306,759/716,452.50 = 716,452.50/x
3. Step 3: Cross multiply
   306,759x = 716,452.50 × 716,452.50
4. Step 4: Simplify right side
   306,759x = 513,304,184,756.25
5. Step 5: Solve for x
   x = 513,304,184,756.25/306,759
6. Step 6: Final answer
   x = 1,673,314.18