Finding the Third Proportional to 33,715.50 and 69,609

Step by Step Solution

1. Step 1: Write the proportion equation
   33,715.50 : 69,609 = 69,609 : x
2. Step 2: Convert to fraction form
   33,715.50/69,609 = 69,609/x
3. Step 3: Cross multiply
   33,715.50x = 69,609 × 69,609
4. Step 4: Simplify right side
   33,715.50x = 4,845,412,881
5. Step 5: Solve for x
   x = 4,845,412,881/33,715.50
6. Step 6: Final answer
   x = 143,714.70