Finding the Third Proportional to 67,319.16 and 99,678.94

Step by Step Solution

1. Step 1: Write the proportion equation
   67,319.16 : 99,678.94 = 99,678.94 : x
2. Step 2: Convert to fraction form
   67,319.16/99,678.94 = 99,678.94/x
3. Step 3: Cross multiply
   67,319.16x = 99,678.94 × 99,678.94
4. Step 4: Simplify right side
   67,319.16x = 9,935,890,581.13
5. Step 5: Solve for x
   x = 9,935,890,581.13/67,319.16
6. Step 6: Final answer
   x = 147,593.81