Finding the Third Proportional to 67,888.50 and 137,598

Step by Step Solution

1. Step 1: Write the proportion equation
   67,888.50 : 137,598 = 137,598 : x
2. Step 2: Convert to fraction form
   67,888.50/137,598 = 137,598/x
3. Step 3: Cross multiply
   67,888.50x = 137,598 × 137,598
4. Step 4: Simplify right side
   67,888.50x = 18,933,209,604
5. Step 5: Solve for x
   x = 18,933,209,604/67,888.50
6. Step 6: Final answer
   x = 278,886.85