Finding the Third Proportional to 699,123 and 1,489,758

Step by Step Solution

1. Step 1: Write the proportion equation
   699,123 : 1,489,758 = 1,489,758 : x
2. Step 2: Convert to fraction form
   699,123/1,489,758 = 1,489,758/x
3. Step 3: Cross multiply
   699,123x = 1,489,758 × 1,489,758
4. Step 4: Simplify right side
   699,123x = 2,219,378,898,564
5. Step 5: Solve for x
   x = 2,219,378,898,564/699,123
6. Step 6: Final answer
   x = 3,174,518.50