Finding the Third Proportional to 72,870 and 157,224

Step by Step Solution

1. Step 1: Write the proportion equation
   72,870 : 157,224 = 157,224 : x
2. Step 2: Convert to fraction form
   72,870/157,224 = 157,224/x
3. Step 3: Cross multiply
   72,870x = 157,224 × 157,224
4. Step 4: Simplify right side
   72,870x = 24,719,386,176
5. Step 5: Solve for x
   x = 24,719,386,176/72,870
6. Step 6: Final answer
   x = 339,225.83