Finding the Third Proportional to 65,722.50 and 102,964.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,722.50 : 102,964.50 = 102,964.50 : x
2. Step 2: Convert to fraction form
   65,722.50/102,964.50 = 102,964.50/x
3. Step 3: Cross multiply
   65,722.50x = 102,964.50 × 102,964.50
4. Step 4: Simplify right side
   65,722.50x = 10,601,688,260.25
5. Step 5: Solve for x
   x = 10,601,688,260.25/65,722.50
6. Step 6: Final answer
   x = 161,309.88