Finding the Third Proportional to 140,965.88 and 215,914.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,965.88 : 215,914.50 = 215,914.50 : x
2. Step 2: Convert to fraction form
   140,965.88/215,914.50 = 215,914.50/x
3. Step 3: Cross multiply
   140,965.88x = 215,914.50 × 215,914.50
4. Step 4: Simplify right side
   140,965.88x = 46,619,071,310.25
5. Step 5: Solve for x
   x = 46,619,071,310.25/140,965.88
6. Step 6: Final answer
   x = 330,711.75