Finding the Third Proportional to 305,683 and 719,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   305,683 : 719,258.50 = 719,258.50 : x
2. Step 2: Convert to fraction form
   305,683/719,258.50 = 719,258.50/x
3. Step 3: Cross multiply
   305,683x = 719,258.50 × 719,258.50
4. Step 4: Simplify right side
   305,683x = 517,332,789,822.25
5. Step 5: Solve for x
   x = 517,332,789,822.25/305,683
6. Step 6: Final answer
   x = 1,692,383.25