Finding the Third Proportional to 356,971.50 and 776,151

Step by Step Solution

1. Step 1: Write the proportion equation
   356,971.50 : 776,151 = 776,151 : x
2. Step 2: Convert to fraction form
   356,971.50/776,151 = 776,151/x
3. Step 3: Cross multiply
   356,971.50x = 776,151 × 776,151
4. Step 4: Simplify right side
   356,971.50x = 602,410,374,801
5. Step 5: Solve for x
   x = 602,410,374,801/356,971.50
6. Step 6: Final answer
   x = 1,687,558.74