Finding the Third Proportional to 141,213.50 and 310,414

Step by Step Solution

1. Step 1: Write the proportion equation
   141,213.50 : 310,414 = 310,414 : x
2. Step 2: Convert to fraction form
   141,213.50/310,414 = 310,414/x
3. Step 3: Cross multiply
   141,213.50x = 310,414 × 310,414
4. Step 4: Simplify right side
   141,213.50x = 96,356,851,396
5. Step 5: Solve for x
   x = 96,356,851,396/141,213.50
6. Step 6: Final answer
   x = 682,348.72