Finding the Third Proportional to 406,389 and 632,848.50

Step by Step Solution

1. Step 1: Write the proportion equation
   406,389 : 632,848.50 = 632,848.50 : x
2. Step 2: Convert to fraction form
   406,389/632,848.50 = 632,848.50/x
3. Step 3: Cross multiply
   406,389x = 632,848.50 × 632,848.50
4. Step 4: Simplify right side
   406,389x = 400,497,223,952.25
5. Step 5: Solve for x
   x = 400,497,223,952.25/406,389
6. Step 6: Final answer
   x = 985,502.13