Finding the Third Proportional to 264,414.50 and 402,818

Step by Step Solution

1. Step 1: Write the proportion equation
   264,414.50 : 402,818 = 402,818 : x
2. Step 2: Convert to fraction form
   264,414.50/402,818 = 402,818/x
3. Step 3: Cross multiply
   264,414.50x = 402,818 × 402,818
4. Step 4: Simplify right side
   264,414.50x = 162,262,341,124
5. Step 5: Solve for x
   x = 162,262,341,124/264,414.50
6. Step 6: Final answer
   x = 613,666.58