Finding the Third Proportional to 30,954.50 and 67,842.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,954.50 : 67,842.75 = 67,842.75 : x
2. Step 2: Convert to fraction form
   30,954.50/67,842.75 = 67,842.75/x
3. Step 3: Cross multiply
   30,954.50x = 67,842.75 × 67,842.75
4. Step 4: Simplify right side
   30,954.50x = 4,602,638,727.56
5. Step 5: Solve for x
   x = 4,602,638,727.56/30,954.50
6. Step 6: Final answer
   x = 148,690.46