Finding the Third Proportional to 78,043.50 and 162,648

Step by Step Solution

1. Step 1: Write the proportion equation
   78,043.50 : 162,648 = 162,648 : x
2. Step 2: Convert to fraction form
   78,043.50/162,648 = 162,648/x
3. Step 3: Cross multiply
   78,043.50x = 162,648 × 162,648
4. Step 4: Simplify right side
   78,043.50x = 26,454,371,904
5. Step 5: Solve for x
   x = 26,454,371,904/78,043.50
6. Step 6: Final answer
   x = 338,969.57