Finding the Third Proportional to 64,811 and 99,982.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,811 : 99,982.50 = 99,982.50 : x
2. Step 2: Convert to fraction form
   64,811/99,982.50 = 99,982.50/x
3. Step 3: Cross multiply
   64,811x = 99,982.50 × 99,982.50
4. Step 4: Simplify right side
   64,811x = 9,996,500,306.25
5. Step 5: Solve for x
   x = 9,996,500,306.25/64,811
6. Step 6: Final answer
   x = 154,240.80