Finding the Third Proportional to 163,809 and 350,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   163,809 : 350,389.50 = 350,389.50 : x
2. Step 2: Convert to fraction form
   163,809/350,389.50 = 350,389.50/x
3. Step 3: Cross multiply
   163,809x = 350,389.50 × 350,389.50
4. Step 4: Simplify right side
   163,809x = 122,772,801,710.25
5. Step 5: Solve for x
   x = 122,772,801,710.25/163,809
6. Step 6: Final answer
   x = 749,487.52