Finding the Third Proportional to 151,612.50 and 311,982

Step by Step Solution

1. Step 1: Write the proportion equation
   151,612.50 : 311,982 = 311,982 : x
2. Step 2: Convert to fraction form
   151,612.50/311,982 = 311,982/x
3. Step 3: Cross multiply
   151,612.50x = 311,982 × 311,982
4. Step 4: Simplify right side
   151,612.50x = 97,332,768,324
5. Step 5: Solve for x
   x = 97,332,768,324/151,612.50
6. Step 6: Final answer
   x = 641,983.80