Finding the Third Proportional to 490,434.50 and 749,908

Step by Step Solution

1. Step 1: Write the proportion equation
   490,434.50 : 749,908 = 749,908 : x
2. Step 2: Convert to fraction form
   490,434.50/749,908 = 749,908/x
3. Step 3: Cross multiply
   490,434.50x = 749,908 × 749,908
4. Step 4: Simplify right side
   490,434.50x = 562,362,008,464
5. Step 5: Solve for x
   x = 562,362,008,464/490,434.50
6. Step 6: Final answer
   x = 1,146,660.78