Finding the Third Proportional to 108,732.50 and 130,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,732.50 : 130,269.50 = 130,269.50 : x
2. Step 2: Convert to fraction form
   108,732.50/130,269.50 = 130,269.50/x
3. Step 3: Cross multiply
   108,732.50x = 130,269.50 × 130,269.50
4. Step 4: Simplify right side
   108,732.50x = 16,970,142,630.25
5. Step 5: Solve for x
   x = 16,970,142,630.25/108,732.50
6. Step 6: Final answer
   x = 156,072.40