Finding the Third Proportional to 64,789.88 and 105,796.13

Step by Step Solution

1. Step 1: Write the proportion equation
   64,789.88 : 105,796.13 = 105,796.13 : x
2. Step 2: Convert to fraction form
   64,789.88/105,796.13 = 105,796.13/x
3. Step 3: Cross multiply
   64,789.88x = 105,796.13 × 105,796.13
4. Step 4: Simplify right side
   64,789.88x = 11,192,820,065.02
5. Step 5: Solve for x
   x = 11,192,820,065.02/64,789.88
6. Step 6: Final answer
   x = 172,755.70