Finding the Third Proportional to 141,028 and 309,960

Step by Step Solution

1. Step 1: Write the proportion equation
   141,028 : 309,960 = 309,960 : x
2. Step 2: Convert to fraction form
   141,028/309,960 = 309,960/x
3. Step 3: Cross multiply
   141,028x = 309,960 × 309,960
4. Step 4: Simplify right side
   141,028x = 96,075,201,600
5. Step 5: Solve for x
   x = 96,075,201,600/141,028
6. Step 6: Final answer
   x = 681,249.12