Finding the Third Proportional to 15,686.16 and 34,230.09

Step by Step Solution

1. Step 1: Write the proportion equation
   15,686.16 : 34,230.09 = 34,230.09 : x
2. Step 2: Convert to fraction form
   15,686.16/34,230.09 = 34,230.09/x
3. Step 3: Cross multiply
   15,686.16x = 34,230.09 × 34,230.09
4. Step 4: Simplify right side
   15,686.16x = 1,171,699,318.13
5. Step 5: Solve for x
   x = 1,171,699,318.13/15,686.16
6. Step 6: Final answer
   x = 74,696.39