Finding the Third Proportional to 72,538.50 and 151,638

Step by Step Solution

1. Step 1: Write the proportion equation
   72,538.50 : 151,638 = 151,638 : x
2. Step 2: Convert to fraction form
   72,538.50/151,638 = 151,638/x
3. Step 3: Cross multiply
   72,538.50x = 151,638 × 151,638
4. Step 4: Simplify right side
   72,538.50x = 22,994,083,044
5. Step 5: Solve for x
   x = 22,994,083,044/72,538.50
6. Step 6: Final answer
   x = 316,991.43