Finding the Third Proportional to 72,013.50 and 109,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,013.50 : 109,012.50 = 109,012.50 : x
2. Step 2: Convert to fraction form
   72,013.50/109,012.50 = 109,012.50/x
3. Step 3: Cross multiply
   72,013.50x = 109,012.50 × 109,012.50
4. Step 4: Simplify right side
   72,013.50x = 11,883,725,156.25
5. Step 5: Solve for x
   x = 11,883,725,156.25/72,013.50
6. Step 6: Final answer
   x = 165,020.80