Finding the Third Proportional to 72,318 and 157,488

Step by Step Solution

1. Step 1: Write the proportion equation
   72,318 : 157,488 = 157,488 : x
2. Step 2: Convert to fraction form
   72,318/157,488 = 157,488/x
3. Step 3: Cross multiply
   72,318x = 157,488 × 157,488
4. Step 4: Simplify right side
   72,318x = 24,802,470,144
5. Step 5: Solve for x
   x = 24,802,470,144/72,318
6. Step 6: Final answer
   x = 342,963.99