Finding the Third Proportional to 64,648.13 and 99,847.69

Step by Step Solution

1. Step 1: Write the proportion equation
   64,648.13 : 99,847.69 = 99,847.69 : x
2. Step 2: Convert to fraction form
   64,648.13/99,847.69 = 99,847.69/x
3. Step 3: Cross multiply
   64,648.13x = 99,847.69 × 99,847.69
4. Step 4: Simplify right side
   64,648.13x = 9,969,560,699.10
5. Step 5: Solve for x
   x = 9,969,560,699.10/64,648.13
6. Step 6: Final answer
   x = 154,212.68