Finding the Third Proportional to 396,817 and 598,801.50

Step by Step Solution

1. Step 1: Write the proportion equation
   396,817 : 598,801.50 = 598,801.50 : x
2. Step 2: Convert to fraction form
   396,817/598,801.50 = 598,801.50/x
3. Step 3: Cross multiply
   396,817x = 598,801.50 × 598,801.50
4. Step 4: Simplify right side
   396,817x = 358,563,236,402.25
5. Step 5: Solve for x
   x = 358,563,236,402.25/396,817
6. Step 6: Final answer
   x = 903,598.48