Finding the Third Proportional to 72,187 and 152,273

Step by Step Solution

1. Step 1: Write the proportion equation
   72,187 : 152,273 = 152,273 : x
2. Step 2: Convert to fraction form
   72,187/152,273 = 152,273/x
3. Step 3: Cross multiply
   72,187x = 152,273 × 152,273
4. Step 4: Simplify right side
   72,187x = 23,187,066,529
5. Step 5: Solve for x
   x = 23,187,066,529/72,187
6. Step 6: Final answer
   x = 321,208.34