Finding the Third Proportional to 355,258 and 760,900

Step by Step Solution

1. Step 1: Write the proportion equation
   355,258 : 760,900 = 760,900 : x
2. Step 2: Convert to fraction form
   355,258/760,900 = 760,900/x
3. Step 3: Cross multiply
   355,258x = 760,900 × 760,900
4. Step 4: Simplify right side
   355,258x = 578,968,810,000
5. Step 5: Solve for x
   x = 578,968,810,000/355,258
6. Step 6: Final answer
   x = 1,629,713.64