Finding the Third Proportional to 268,518 and 376,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   268,518 : 376,411.50 = 376,411.50 : x
2. Step 2: Convert to fraction form
   268,518/376,411.50 = 376,411.50/x
3. Step 3: Cross multiply
   268,518x = 376,411.50 × 376,411.50
4. Step 4: Simplify right side
   268,518x = 141,685,617,332.25
5. Step 5: Solve for x
   x = 141,685,617,332.25/268,518
6. Step 6: Final answer
   x = 527,657.80