Finding the Third Proportional to 71,857.50 and 151,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,857.50 : 151,156.50 = 151,156.50 : x
2. Step 2: Convert to fraction form
   71,857.50/151,156.50 = 151,156.50/x
3. Step 3: Cross multiply
   71,857.50x = 151,156.50 × 151,156.50
4. Step 4: Simplify right side
   71,857.50x = 22,848,287,492.25
5. Step 5: Solve for x
   x = 22,848,287,492.25/71,857.50
6. Step 6: Final answer
   x = 317,966.64