Finding the Third Proportional to 106,960.50 and 139,056.75

Step by Step Solution

1. Step 1: Write the proportion equation
   106,960.50 : 139,056.75 = 139,056.75 : x
2. Step 2: Convert to fraction form
   106,960.50/139,056.75 = 139,056.75/x
3. Step 3: Cross multiply
   106,960.50x = 139,056.75 × 139,056.75
4. Step 4: Simplify right side
   106,960.50x = 19,336,779,720.56
5. Step 5: Solve for x
   x = 19,336,779,720.56/106,960.50
6. Step 6: Final answer
   x = 180,784.31