Finding the Third Proportional to 152,208 and 243,072

Step by Step Solution

1. Step 1: Write the proportion equation
   152,208 : 243,072 = 243,072 : x
2. Step 2: Convert to fraction form
   152,208/243,072 = 243,072/x
3. Step 3: Cross multiply
   152,208x = 243,072 × 243,072
4. Step 4: Simplify right side
   152,208x = 59,083,997,184
5. Step 5: Solve for x
   x = 59,083,997,184/152,208
6. Step 6: Final answer
   x = 388,179.32