Finding the Third Proportional to 34,543.50 and 71,683.50

Step by Step Solution

1. Step 1: Write the proportion equation
   34,543.50 : 71,683.50 = 71,683.50 : x
2. Step 2: Convert to fraction form
   34,543.50/71,683.50 = 71,683.50/x
3. Step 3: Cross multiply
   34,543.50x = 71,683.50 × 71,683.50
4. Step 4: Simplify right side
   34,543.50x = 5,138,524,172.25
5. Step 5: Solve for x
   x = 5,138,524,172.25/34,543.50
6. Step 6: Final answer
   x = 148,755.17