Finding the Third Proportional to 71,131.50 and 148,838.63

Step by Step Solution

1. Step 1: Write the proportion equation
   71,131.50 : 148,838.63 = 148,838.63 : x
2. Step 2: Convert to fraction form
   71,131.50/148,838.63 = 148,838.63/x
3. Step 3: Cross multiply
   71,131.50x = 148,838.63 × 148,838.63
4. Step 4: Simplify right side
   71,131.50x = 22,152,936,291.89
5. Step 5: Solve for x
   x = 22,152,936,291.89/71,131.50
6. Step 6: Final answer
   x = 311,436.37