Finding the Third Proportional to 492,729 and 741,290

Step by Step Solution

1. Step 1: Write the proportion equation
   492,729 : 741,290 = 741,290 : x
2. Step 2: Convert to fraction form
   492,729/741,290 = 741,290/x
3. Step 3: Cross multiply
   492,729x = 741,290 × 741,290
4. Step 4: Simplify right side
   492,729x = 549,510,864,100
5. Step 5: Solve for x
   x = 549,510,864,100/492,729
6. Step 6: Final answer
   x = 1,115,239.54