Finding the Third Proportional to 637,389 and 1,369,507.50

Step by Step Solution

1. Step 1: Write the proportion equation
   637,389 : 1,369,507.50 = 1,369,507.50 : x
2. Step 2: Convert to fraction form
   637,389/1,369,507.50 = 1,369,507.50/x
3. Step 3: Cross multiply
   637,389x = 1,369,507.50 × 1,369,507.50
4. Step 4: Simplify right side
   637,389x = 1,875,550,792,556.25
5. Step 5: Solve for x
   x = 1,875,550,792,556.25/637,389
6. Step 6: Final answer
   x = 2,942,552.81