Finding the Third Proportional to 774,427.50 and 1,138,849.50

Step by Step Solution

1. Step 1: Write the proportion equation
   774,427.50 : 1,138,849.50 = 1,138,849.50 : x
2. Step 2: Convert to fraction form
   774,427.50/1,138,849.50 = 1,138,849.50/x
3. Step 3: Cross multiply
   774,427.50x = 1,138,849.50 × 1,138,849.50
4. Step 4: Simplify right side
   774,427.50x = 1,296,978,183,650.25
5. Step 5: Solve for x
   x = 1,296,978,183,650.25/774,427.50
6. Step 6: Final answer
   x = 1,674,757.40