Finding the Third Proportional to 415,376 and 622,371.50

Step by Step Solution

1. Step 1: Write the proportion equation
   415,376 : 622,371.50 = 622,371.50 : x
2. Step 2: Convert to fraction form
   415,376/622,371.50 = 622,371.50/x
3. Step 3: Cross multiply
   415,376x = 622,371.50 × 622,371.50
4. Step 4: Simplify right side
   415,376x = 387,346,284,012.25
5. Step 5: Solve for x
   x = 387,346,284,012.25/415,376
6. Step 6: Final answer
   x = 932,519.65