Finding the Third Proportional to 65,164.50 and 142,787.81

Step by Step Solution

1. Step 1: Write the proportion equation
   65,164.50 : 142,787.81 = 142,787.81 : x
2. Step 2: Convert to fraction form
   65,164.50/142,787.81 = 142,787.81/x
3. Step 3: Cross multiply
   65,164.50x = 142,787.81 × 142,787.81
4. Step 4: Simplify right side
   65,164.50x = 20,388,359,398.54
5. Step 5: Solve for x
   x = 20,388,359,398.54/65,164.50
6. Step 6: Final answer
   x = 312,875.25