Finding the Third Proportional to 67,899.75 and 99,769.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,899.75 : 99,769.50 = 99,769.50 : x
2. Step 2: Convert to fraction form
   67,899.75/99,769.50 = 99,769.50/x
3. Step 3: Cross multiply
   67,899.75x = 99,769.50 × 99,769.50
4. Step 4: Simplify right side
   67,899.75x = 9,953,953,130.25
5. Step 5: Solve for x
   x = 9,953,953,130.25/67,899.75
6. Step 6: Final answer
   x = 146,597.79