Finding the Third Proportional to 71,773.50 and 102,739.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,773.50 : 102,739.50 = 102,739.50 : x
2. Step 2: Convert to fraction form
   71,773.50/102,739.50 = 102,739.50/x
3. Step 3: Cross multiply
   71,773.50x = 102,739.50 × 102,739.50
4. Step 4: Simplify right side
   71,773.50x = 10,555,404,860.25
5. Step 5: Solve for x
   x = 10,555,404,860.25/71,773.50
6. Step 6: Final answer
   x = 147,065.49