Finding the Third Proportional to 403,717.50 and 626,886

Step by Step Solution

1. Step 1: Write the proportion equation
   403,717.50 : 626,886 = 626,886 : x
2. Step 2: Convert to fraction form
   403,717.50/626,886 = 626,886/x
3. Step 3: Cross multiply
   403,717.50x = 626,886 × 626,886
4. Step 4: Simplify right side
   403,717.50x = 392,986,056,996
5. Step 5: Solve for x
   x = 392,986,056,996/403,717.50
6. Step 6: Final answer
   x = 973,418.43