Finding the Third Proportional to 336,358.50 and 521,350

Step by Step Solution

1. Step 1: Write the proportion equation
   336,358.50 : 521,350 = 521,350 : x
2. Step 2: Convert to fraction form
   336,358.50/521,350 = 521,350/x
3. Step 3: Cross multiply
   336,358.50x = 521,350 × 521,350
4. Step 4: Simplify right side
   336,358.50x = 271,805,822,500
5. Step 5: Solve for x
   x = 271,805,822,500/336,358.50
6. Step 6: Final answer
   x = 808,083.70