Finding the Third Proportional to 141,930 and 309,981.75

Step by Step Solution

1. Step 1: Write the proportion equation
   141,930 : 309,981.75 = 309,981.75 : x
2. Step 2: Convert to fraction form
   141,930/309,981.75 = 309,981.75/x
3. Step 3: Cross multiply
   141,930x = 309,981.75 × 309,981.75
4. Step 4: Simplify right side
   141,930x = 96,088,685,333.06
5. Step 5: Solve for x
   x = 96,088,685,333.06/141,930
6. Step 6: Final answer
   x = 677,014.62