Finding the Third Proportional to 61,166.75 and 129,684

Step by Step Solution

1. Step 1: Write the proportion equation
   61,166.75 : 129,684 = 129,684 : x
2. Step 2: Convert to fraction form
   61,166.75/129,684 = 129,684/x
3. Step 3: Cross multiply
   61,166.75x = 129,684 × 129,684
4. Step 4: Simplify right side
   61,166.75x = 16,817,939,856
5. Step 5: Solve for x
   x = 16,817,939,856/61,166.75
6. Step 6: Final answer
   x = 274,952.32