Finding the Third Proportional to 105,988.50 and 159,210

Step by Step Solution

1. Step 1: Write the proportion equation
   105,988.50 : 159,210 = 159,210 : x
2. Step 2: Convert to fraction form
   105,988.50/159,210 = 159,210/x
3. Step 3: Cross multiply
   105,988.50x = 159,210 × 159,210
4. Step 4: Simplify right side
   105,988.50x = 25,347,824,100
5. Step 5: Solve for x
   x = 25,347,824,100/105,988.50
6. Step 6: Final answer
   x = 239,156.36