Finding the Third Proportional to 141,870 and 308,940

Step by Step Solution

1. Step 1: Write the proportion equation
   141,870 : 308,940 = 308,940 : x
2. Step 2: Convert to fraction form
   141,870/308,940 = 308,940/x
3. Step 3: Cross multiply
   141,870x = 308,940 × 308,940
4. Step 4: Simplify right side
   141,870x = 95,443,923,600
5. Step 5: Solve for x
   x = 95,443,923,600/141,870
6. Step 6: Final answer
   x = 672,756.21