Finding the Third Proportional to 699,831 and 1,049,557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   699,831 : 1,049,557.50 = 1,049,557.50 : x
2. Step 2: Convert to fraction form
   699,831/1,049,557.50 = 1,049,557.50/x
3. Step 3: Cross multiply
   699,831x = 1,049,557.50 × 1,049,557.50
4. Step 4: Simplify right side
   699,831x = 1,101,570,945,806.25
5. Step 5: Solve for x
   x = 1,101,570,945,806.25/699,831
6. Step 6: Final answer
   x = 1,574,052.80