Finding the Third Proportional to 310,440 and 474,682.50

Step by Step Solution

1. Step 1: Write the proportion equation
   310,440 : 474,682.50 = 474,682.50 : x
2. Step 2: Convert to fraction form
   310,440/474,682.50 = 474,682.50/x
3. Step 3: Cross multiply
   310,440x = 474,682.50 × 474,682.50
4. Step 4: Simplify right side
   310,440x = 225,323,475,806.25
5. Step 5: Solve for x
   x = 225,323,475,806.25/310,440
6. Step 6: Final answer
   x = 725,819.73