Finding the Third Proportional to 72,439.50 and 110,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,439.50 : 110,812.50 = 110,812.50 : x
2. Step 2: Convert to fraction form
   72,439.50/110,812.50 = 110,812.50/x
3. Step 3: Cross multiply
   72,439.50x = 110,812.50 × 110,812.50
4. Step 4: Simplify right side
   72,439.50x = 12,279,410,156.25
5. Step 5: Solve for x
   x = 12,279,410,156.25/72,439.50
6. Step 6: Final answer
   x = 169,512.63