Finding the Third Proportional to 78,472.50 and 110,555.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,472.50 : 110,555.50 = 110,555.50 : x
2. Step 2: Convert to fraction form
   78,472.50/110,555.50 = 110,555.50/x
3. Step 3: Cross multiply
   78,472.50x = 110,555.50 × 110,555.50
4. Step 4: Simplify right side
   78,472.50x = 12,222,518,580.25
5. Step 5: Solve for x
   x = 12,222,518,580.25/78,472.50
6. Step 6: Final answer
   x = 155,755.44