Finding the Third Proportional to 30,886 and 67,435.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,886 : 67,435.50 = 67,435.50 : x
2. Step 2: Convert to fraction form
   30,886/67,435.50 = 67,435.50/x
3. Step 3: Cross multiply
   30,886x = 67,435.50 × 67,435.50
4. Step 4: Simplify right side
   30,886x = 4,547,546,660.25
5. Step 5: Solve for x
   x = 4,547,546,660.25/30,886
6. Step 6: Final answer
   x = 147,236.50