Finding the Third Proportional to 30,249 and 65,686.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,249 : 65,686.50 = 65,686.50 : x
2. Step 2: Convert to fraction form
   30,249/65,686.50 = 65,686.50/x
3. Step 3: Cross multiply
   30,249x = 65,686.50 × 65,686.50
4. Step 4: Simplify right side
   30,249x = 4,314,716,282.25
5. Step 5: Solve for x
   x = 4,314,716,282.25/30,249
6. Step 6: Final answer
   x = 142,639.96