Finding the Third Proportional to 141,570 and 309,393

Step by Step Solution

1. Step 1: Write the proportion equation
   141,570 : 309,393 = 309,393 : x
2. Step 2: Convert to fraction form
   141,570/309,393 = 309,393/x
3. Step 3: Cross multiply
   141,570x = 309,393 × 309,393
4. Step 4: Simplify right side
   141,570x = 95,724,028,449
5. Step 5: Solve for x
   x = 95,724,028,449/141,570
6. Step 6: Final answer
   x = 676,160.40