Finding the Third Proportional to 72,890 and 157,870

Step by Step Solution

1. Step 1: Write the proportion equation
   72,890 : 157,870 = 157,870 : x
2. Step 2: Convert to fraction form
   72,890/157,870 = 157,870/x
3. Step 3: Cross multiply
   72,890x = 157,870 × 157,870
4. Step 4: Simplify right side
   72,890x = 24,922,936,900
5. Step 5: Solve for x
   x = 24,922,936,900/72,890
6. Step 6: Final answer
   x = 341,925.32