Finding the Third Proportional to 166,588 and 243,636

Step by Step Solution

1. Step 1: Write the proportion equation
   166,588 : 243,636 = 243,636 : x
2. Step 2: Convert to fraction form
   166,588/243,636 = 243,636/x
3. Step 3: Cross multiply
   166,588x = 243,636 × 243,636
4. Step 4: Simplify right side
   166,588x = 59,358,500,496
5. Step 5: Solve for x
   x = 59,358,500,496/166,588
6. Step 6: Final answer
   x = 356,319.19