Finding the Third Proportional to 669,415 and 936,307.50

Step by Step Solution

1. Step 1: Write the proportion equation
   669,415 : 936,307.50 = 936,307.50 : x
2. Step 2: Convert to fraction form
   669,415/936,307.50 = 936,307.50/x
3. Step 3: Cross multiply
   669,415x = 936,307.50 × 936,307.50
4. Step 4: Simplify right side
   669,415x = 876,671,734,556.25
5. Step 5: Solve for x
   x = 876,671,734,556.25/669,415
6. Step 6: Final answer
   x = 1,309,608.74