Finding the Third Proportional to 71,035.50 and 153,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,035.50 : 153,139.50 = 153,139.50 : x
2. Step 2: Convert to fraction form
   71,035.50/153,139.50 = 153,139.50/x
3. Step 3: Cross multiply
   71,035.50x = 153,139.50 × 153,139.50
4. Step 4: Simplify right side
   71,035.50x = 23,451,706,460.25
5. Step 5: Solve for x
   x = 23,451,706,460.25/71,035.50
6. Step 6: Final answer
   x = 330,140.65