Finding the Third Proportional to 72,985.50 and 159,518.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,985.50 : 159,518.25 = 159,518.25 : x
2. Step 2: Convert to fraction form
   72,985.50/159,518.25 = 159,518.25/x
3. Step 3: Cross multiply
   72,985.50x = 159,518.25 × 159,518.25
4. Step 4: Simplify right side
   72,985.50x = 25,446,072,083.06
5. Step 5: Solve for x
   x = 25,446,072,083.06/72,985.50
6. Step 6: Final answer
   x = 348,645.58