Finding the Third Proportional to 66,473.16 and 99,759.09

Step by Step Solution

1. Step 1: Write the proportion equation
   66,473.16 : 99,759.09 = 99,759.09 : x
2. Step 2: Convert to fraction form
   66,473.16/99,759.09 = 99,759.09/x
3. Step 3: Cross multiply
   66,473.16x = 99,759.09 × 99,759.09
4. Step 4: Simplify right side
   66,473.16x = 9,951,876,785.82
5. Step 5: Solve for x
   x = 9,951,876,785.82/66,473.16
6. Step 6: Final answer
   x = 149,712.72