Finding the Third Proportional to 342,258 and 728,850

Step by Step Solution

1. Step 1: Write the proportion equation
   342,258 : 728,850 = 728,850 : x
2. Step 2: Convert to fraction form
   342,258/728,850 = 728,850/x
3. Step 3: Cross multiply
   342,258x = 728,850 × 728,850
4. Step 4: Simplify right side
   342,258x = 531,222,322,500
5. Step 5: Solve for x
   x = 531,222,322,500/342,258
6. Step 6: Final answer
   x = 1,552,110.75