Finding the Third Proportional to 64,820.50 and 105,845.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,820.50 : 105,845.50 = 105,845.50 : x
2. Step 2: Convert to fraction form
   64,820.50/105,845.50 = 105,845.50/x
3. Step 3: Cross multiply
   64,820.50x = 105,845.50 × 105,845.50
4. Step 4: Simplify right side
   64,820.50x = 11,203,269,870.25
5. Step 5: Solve for x
   x = 11,203,269,870.25/64,820.50
6. Step 6: Final answer
   x = 172,835.29