Finding the Third Proportional to 51,011.50 and 71,708

Step by Step Solution

1. Step 1: Write the proportion equation
   51,011.50 : 71,708 = 71,708 : x
2. Step 2: Convert to fraction form
   51,011.50/71,708 = 71,708/x
3. Step 3: Cross multiply
   51,011.50x = 71,708 × 71,708
4. Step 4: Simplify right side
   51,011.50x = 5,142,037,264
5. Step 5: Solve for x
   x = 5,142,037,264/51,011.50
6. Step 6: Final answer
   x = 100,801.53