Finding the Third Proportional to 67,681 and 99,559.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,681 : 99,559.50 = 99,559.50 : x
2. Step 2: Convert to fraction form
   67,681/99,559.50 = 99,559.50/x
3. Step 3: Cross multiply
   67,681x = 99,559.50 × 99,559.50
4. Step 4: Simplify right side
   67,681x = 9,912,094,040.25
5. Step 5: Solve for x
   x = 9,912,094,040.25/67,681
6. Step 6: Final answer
   x = 146,453.13