Finding the Third Proportional to 162,816 and 243,912

Step by Step Solution

1. Step 1: Write the proportion equation
   162,816 : 243,912 = 243,912 : x
2. Step 2: Convert to fraction form
   162,816/243,912 = 243,912/x
3. Step 3: Cross multiply
   162,816x = 243,912 × 243,912
4. Step 4: Simplify right side
   162,816x = 59,493,063,744
5. Step 5: Solve for x
   x = 59,493,063,744/162,816
6. Step 6: Final answer
   x = 365,400.60