Finding the Third Proportional to 45,688.50 and 71,688

Step by Step Solution

1. Step 1: Write the proportion equation
   45,688.50 : 71,688 = 71,688 : x
2. Step 2: Convert to fraction form
   45,688.50/71,688 = 71,688/x
3. Step 3: Cross multiply
   45,688.50x = 71,688 × 71,688
4. Step 4: Simplify right side
   45,688.50x = 5,139,169,344
5. Step 5: Solve for x
   x = 5,139,169,344/45,688.50
6. Step 6: Final answer
   x = 112,482.78