Finding the Third Proportional to 71,077.50 and 153,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,077.50 : 153,238.50 = 153,238.50 : x
2. Step 2: Convert to fraction form
   71,077.50/153,238.50 = 153,238.50/x
3. Step 3: Cross multiply
   71,077.50x = 153,238.50 × 153,238.50
4. Step 4: Simplify right side
   71,077.50x = 23,482,037,882.25
5. Step 5: Solve for x
   x = 23,482,037,882.25/71,077.50
6. Step 6: Final answer
   x = 330,372.31