Finding the Third Proportional to 67,117.50 and 142,011

Step by Step Solution

1. Step 1: Write the proportion equation
   67,117.50 : 142,011 = 142,011 : x
2. Step 2: Convert to fraction form
   67,117.50/142,011 = 142,011/x
3. Step 3: Cross multiply
   67,117.50x = 142,011 × 142,011
4. Step 4: Simplify right side
   67,117.50x = 20,167,124,121
5. Step 5: Solve for x
   x = 20,167,124,121/67,117.50
6. Step 6: Final answer
   x = 300,474.90