Finding the Third Proportional to 71,615.81 and 149,112.56

Step by Step Solution

1. Step 1: Write the proportion equation
   71,615.81 : 149,112.56 = 149,112.56 : x
2. Step 2: Convert to fraction form
   71,615.81/149,112.56 = 149,112.56/x
3. Step 3: Cross multiply
   71,615.81x = 149,112.56 × 149,112.56
4. Step 4: Simplify right side
   71,615.81x = 22,234,556,295.32
5. Step 5: Solve for x
   x = 22,234,556,295.32/71,615.81
6. Step 6: Final answer
   x = 310,469.93