Finding the Third Proportional to 140,077.50 and 217,260

Step by Step Solution

1. Step 1: Write the proportion equation
   140,077.50 : 217,260 = 217,260 : x
2. Step 2: Convert to fraction form
   140,077.50/217,260 = 217,260/x
3. Step 3: Cross multiply
   140,077.50x = 217,260 × 217,260
4. Step 4: Simplify right side
   140,077.50x = 47,201,907,600
5. Step 5: Solve for x
   x = 47,201,907,600/140,077.50
6. Step 6: Final answer
   x = 336,969.95