Finding the Third Proportional to 141,012 and 309,928.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,012 : 309,928.50 = 309,928.50 : x
2. Step 2: Convert to fraction form
   141,012/309,928.50 = 309,928.50/x
3. Step 3: Cross multiply
   141,012x = 309,928.50 × 309,928.50
4. Step 4: Simplify right side
   141,012x = 96,055,675,112.25
5. Step 5: Solve for x
   x = 96,055,675,112.25/141,012
6. Step 6: Final answer
   x = 681,187.95