Finding the Third Proportional to 141,140 and 309,352

Step by Step Solution

1. Step 1: Write the proportion equation
   141,140 : 309,352 = 309,352 : x
2. Step 2: Convert to fraction form
   141,140/309,352 = 309,352/x
3. Step 3: Cross multiply
   141,140x = 309,352 × 309,352
4. Step 4: Simplify right side
   141,140x = 95,698,659,904
5. Step 5: Solve for x
   x = 95,698,659,904/141,140
6. Step 6: Final answer
   x = 678,040.67