Finding the Third Proportional to 34,215.75 and 67,513.50

Step by Step Solution

1. Step 1: Write the proportion equation
   34,215.75 : 67,513.50 = 67,513.50 : x
2. Step 2: Convert to fraction form
   34,215.75/67,513.50 = 67,513.50/x
3. Step 3: Cross multiply
   34,215.75x = 67,513.50 × 67,513.50
4. Step 4: Simplify right side
   34,215.75x = 4,558,072,682.25
5. Step 5: Solve for x
   x = 4,558,072,682.25/34,215.75
6. Step 6: Final answer
   x = 133,215.63