Finding the Third Proportional to 490,448 and 749,928

Step by Step Solution

1. Step 1: Write the proportion equation
   490,448 : 749,928 = 749,928 : x
2. Step 2: Convert to fraction form
   490,448/749,928 = 749,928/x
3. Step 3: Cross multiply
   490,448x = 749,928 × 749,928
4. Step 4: Simplify right side
   490,448x = 562,392,005,184
5. Step 5: Solve for x
   x = 562,392,005,184/490,448
6. Step 6: Final answer
   x = 1,146,690.38