Finding the Third Proportional to 72,880 and 157,240

Step by Step Solution

1. Step 1: Write the proportion equation
   72,880 : 157,240 = 157,240 : x
2. Step 2: Convert to fraction form
   72,880/157,240 = 157,240/x
3. Step 3: Cross multiply
   72,880x = 157,240 × 157,240
4. Step 4: Simplify right side
   72,880x = 24,724,417,600
5. Step 5: Solve for x
   x = 24,724,417,600/72,880
6. Step 6: Final answer
   x = 339,248.32