Finding the Third Proportional to 140,340 and 306,072.75

Step by Step Solution

1. Step 1: Write the proportion equation
   140,340 : 306,072.75 = 306,072.75 : x
2. Step 2: Convert to fraction form
   140,340/306,072.75 = 306,072.75/x
3. Step 3: Cross multiply
   140,340x = 306,072.75 × 306,072.75
4. Step 4: Simplify right side
   140,340x = 93,680,528,292.56
5. Step 5: Solve for x
   x = 93,680,528,292.56/140,340
6. Step 6: Final answer
   x = 667,525.50