Finding the Third Proportional to 72,739.50 and 109,379.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,739.50 : 109,379.25 = 109,379.25 : x
2. Step 2: Convert to fraction form
   72,739.50/109,379.25 = 109,379.25/x
3. Step 3: Cross multiply
   72,739.50x = 109,379.25 × 109,379.25
4. Step 4: Simplify right side
   72,739.50x = 11,963,820,330.56
5. Step 5: Solve for x
   x = 11,963,820,330.56/72,739.50
6. Step 6: Final answer
   x = 164,474.88