Finding the Third Proportional to 166,513.50 and 359,631

Step by Step Solution

1. Step 1: Write the proportion equation
   166,513.50 : 359,631 = 359,631 : x
2. Step 2: Convert to fraction form
   166,513.50/359,631 = 359,631/x
3. Step 3: Cross multiply
   166,513.50x = 359,631 × 359,631
4. Step 4: Simplify right side
   166,513.50x = 129,334,456,161
5. Step 5: Solve for x
   x = 129,334,456,161/166,513.50
6. Step 6: Final answer
   x = 776,720.54