Finding the Third Proportional to 141,340 and 309,248

Step by Step Solution

1. Step 1: Write the proportion equation
   141,340 : 309,248 = 309,248 : x
2. Step 2: Convert to fraction form
   141,340/309,248 = 309,248/x
3. Step 3: Cross multiply
   141,340x = 309,248 × 309,248
4. Step 4: Simplify right side
   141,340x = 95,634,325,504
5. Step 5: Solve for x
   x = 95,634,325,504/141,340
6. Step 6: Final answer
   x = 676,626.05