Finding the Third Proportional to 141,555 and 309,363

Step by Step Solution

1. Step 1: Write the proportion equation
   141,555 : 309,363 = 309,363 : x
2. Step 2: Convert to fraction form
   141,555/309,363 = 309,363/x
3. Step 3: Cross multiply
   141,555x = 309,363 × 309,363
4. Step 4: Simplify right side
   141,555x = 95,705,465,769
5. Step 5: Solve for x
   x = 95,705,465,769/141,555
6. Step 6: Final answer
   x = 676,100.92