Finding the Third Proportional to 162,439.50 and 243,660

Step by Step Solution

1. Step 1: Write the proportion equation
   162,439.50 : 243,660 = 243,660 : x
2. Step 2: Convert to fraction form
   162,439.50/243,660 = 243,660/x
3. Step 3: Cross multiply
   162,439.50x = 243,660 × 243,660
4. Step 4: Simplify right side
   162,439.50x = 59,370,195,600
5. Step 5: Solve for x
   x = 59,370,195,600/162,439.50
6. Step 6: Final answer
   x = 365,491.13