Finding the Third Proportional to 70,009.50 and 105,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,009.50 : 105,520.50 = 105,520.50 : x
2. Step 2: Convert to fraction form
   70,009.50/105,520.50 = 105,520.50/x
3. Step 3: Cross multiply
   70,009.50x = 105,520.50 × 105,520.50
4. Step 4: Simplify right side
   70,009.50x = 11,134,575,920.25
5. Step 5: Solve for x
   x = 11,134,575,920.25/70,009.50
6. Step 6: Final answer
   x = 159,043.79