Finding the Third Proportional to 27,217.27 and 42,769.90

Step by Step Solution

1. Step 1: Write the proportion equation
   27,217.27 : 42,769.90 = 42,769.90 : x
2. Step 2: Convert to fraction form
   27,217.27/42,769.90 = 42,769.90/x
3. Step 3: Cross multiply
   27,217.27x = 42,769.90 × 42,769.90
4. Step 4: Simplify right side
   27,217.27x = 1,829,264,212.35
5. Step 5: Solve for x
   x = 1,829,264,212.35/27,217.27
6. Step 6: Final answer
   x = 67,209.70