Finding the Third Proportional to 33,700 and 69,560

Step by Step Solution

1. Step 1: Write the proportion equation
   33,700 : 69,560 = 69,560 : x
2. Step 2: Convert to fraction form
   33,700/69,560 = 69,560/x
3. Step 3: Cross multiply
   33,700x = 69,560 × 69,560
4. Step 4: Simplify right side
   33,700x = 4,838,593,600
5. Step 5: Solve for x
   x = 4,838,593,600/33,700
6. Step 6: Final answer
   x = 143,578.45